diff --git a/lib/ast-converter.js b/lib/ast-converter.js
index d80831b..05fe978 100644
--- a/lib/ast-converter.js
+++ b/lib/ast-converter.js
@@ -1653,6 +1653,24 @@ module.exports = function(ast, extra) {
                 });
                 break;
 
+            case SyntaxKind.DeleteExpression:
+                assign(result, {
+                    type: "UnaryExpression",
+                    operator: "delete",
+                    prefix: true,
+                    argument: convertChild(node.expression)
+                });
+                break;
+
+            case SyntaxKind.VoidExpression:
+                assign(result, {
+                    type: "UnaryExpression",
+                    operator: "void",
+                    prefix: true,
+                    argument: convertChild(node.expression)
+                });
+                break;
+
             case SyntaxKind.TypeOfExpression:
                 assign(result, {
                     type: "UnaryExpression",
diff --git a/tests/fixtures/basics/delete-expression.result.js b/tests/fixtures/basics/delete-expression.result.js
new file mode 100644
index 0000000..590085b
--- /dev/null
+++ b/tests/fixtures/basics/delete-expression.result.js
@@ -0,0 +1,202 @@
+module.exports = {
+    "type": "Program",
+    "range": [
+        0,
+        15
+    ],
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 1,
+            "column": 15
+        }
+    },
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "range": [
+                0,
+                15
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 15
+                }
+            },
+            "expression": {
+                "type": "UnaryExpression",
+                "range": [
+                    0,
+                    14
+                ],
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 14
+                    }
+                },
+                "operator": "delete",
+                "prefix": true,
+                "argument": {
+                    "type": "MemberExpression",
+                    "range": [
+                        7,
+                        14
+                    ],
+                    "loc": {
+                        "start": {
+                            "line": 1,
+                            "column": 7
+                        },
+                        "end": {
+                            "line": 1,
+                            "column": 14
+                        }
+                    },
+                    "object": {
+                        "type": "Identifier",
+                        "range": [
+                            7,
+                            10
+                        ],
+                        "loc": {
+                            "start": {
+                                "line": 1,
+                                "column": 7
+                            },
+                            "end": {
+                                "line": 1,
+                                "column": 10
+                            }
+                        },
+                        "name": "foo"
+                    },
+                    "property": {
+                        "type": "Identifier",
+                        "range": [
+                            11,
+                            14
+                        ],
+                        "loc": {
+                            "start": {
+                                "line": 1,
+                                "column": 11
+                            },
+                            "end": {
+                                "line": 1,
+                                "column": 14
+                            }
+                        },
+                        "name": "bar"
+                    },
+                    "computed": false
+                }
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Keyword",
+            "value": "delete",
+            "range": [
+                0,
+                6
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 6
+                }
+            }
+        },
+        {
+            "type": "Identifier",
+            "value": "foo",
+            "range": [
+                7,
+                10
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 7
+                },
+                "end": {
+                    "line": 1,
+                    "column": 10
+                }
+            }
+        },
+        {
+            "type": "Punctuator",
+            "value": ".",
+            "range": [
+                10,
+                11
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 10
+                },
+                "end": {
+                    "line": 1,
+                    "column": 11
+                }
+            }
+        },
+        {
+            "type": "Identifier",
+            "value": "bar",
+            "range": [
+                11,
+                14
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 11
+                },
+                "end": {
+                    "line": 1,
+                    "column": 14
+                }
+            }
+        },
+        {
+            "type": "Punctuator",
+            "value": ";",
+            "range": [
+                14,
+                15
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 14
+                },
+                "end": {
+                    "line": 1,
+                    "column": 15
+                }
+            }
+        }
+    ]
+};
diff --git a/tests/fixtures/basics/delete-expression.src.js b/tests/fixtures/basics/delete-expression.src.js
new file mode 100644
index 0000000..23cb064
--- /dev/null
+++ b/tests/fixtures/basics/delete-expression.src.js
@@ -0,0 +1 @@
+delete foo.bar;
diff --git a/tests/fixtures/basics/void-expression.result.js b/tests/fixtures/basics/void-expression.result.js
new file mode 100644
index 0000000..12437f1
--- /dev/null
+++ b/tests/fixtures/basics/void-expression.result.js
@@ -0,0 +1,276 @@
+module.exports = {
+    "type": "Program",
+    "range": [
+        0,
+        16
+    ],
+    "loc": {
+        "start": {
+            "line": 1,
+            "column": 0
+        },
+        "end": {
+            "line": 2,
+            "column": 8
+        }
+    },
+    "body": [
+        {
+            "type": "ExpressionStatement",
+            "range": [
+                0,
+                7
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            },
+            "expression": {
+                "type": "UnaryExpression",
+                "range": [
+                    0,
+                    6
+                ],
+                "loc": {
+                    "start": {
+                        "line": 1,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 1,
+                        "column": 6
+                    }
+                },
+                "operator": "void",
+                "prefix": true,
+                "argument": {
+                    "type": "Literal",
+                    "range": [
+                        5,
+                        6
+                    ],
+                    "loc": {
+                        "start": {
+                            "line": 1,
+                            "column": 5
+                        },
+                        "end": {
+                            "line": 1,
+                            "column": 6
+                        }
+                    },
+                    "value": 4,
+                    "raw": "4"
+                }
+            }
+        },
+        {
+            "type": "ExpressionStatement",
+            "range": [
+                8,
+                16
+            ],
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 0
+                },
+                "end": {
+                    "line": 2,
+                    "column": 8
+                }
+            },
+            "expression": {
+                "type": "UnaryExpression",
+                "range": [
+                    8,
+                    15
+                ],
+                "loc": {
+                    "start": {
+                        "line": 2,
+                        "column": 0
+                    },
+                    "end": {
+                        "line": 2,
+                        "column": 7
+                    }
+                },
+                "operator": "void",
+                "prefix": true,
+                "argument": {
+                    "type": "Literal",
+                    "range": [
+                        13,
+                        14
+                    ],
+                    "loc": {
+                        "start": {
+                            "line": 2,
+                            "column": 5
+                        },
+                        "end": {
+                            "line": 2,
+                            "column": 6
+                        }
+                    },
+                    "value": 3,
+                    "raw": "3"
+                }
+            }
+        }
+    ],
+    "sourceType": "script",
+    "tokens": [
+        {
+            "type": "Keyword",
+            "value": "void",
+            "range": [
+                0,
+                4
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 0
+                },
+                "end": {
+                    "line": 1,
+                    "column": 4
+                }
+            }
+        },
+        {
+            "type": "Numeric",
+            "value": "4",
+            "range": [
+                5,
+                6
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 5
+                },
+                "end": {
+                    "line": 1,
+                    "column": 6
+                }
+            }
+        },
+        {
+            "type": "Punctuator",
+            "value": ";",
+            "range": [
+                6,
+                7
+            ],
+            "loc": {
+                "start": {
+                    "line": 1,
+                    "column": 6
+                },
+                "end": {
+                    "line": 1,
+                    "column": 7
+                }
+            }
+        },
+        {
+            "type": "Keyword",
+            "value": "void",
+            "range": [
+                8,
+                12
+            ],
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 0
+                },
+                "end": {
+                    "line": 2,
+                    "column": 4
+                }
+            }
+        },
+        {
+            "type": "Punctuator",
+            "value": "(",
+            "range": [
+                12,
+                13
+            ],
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 4
+                },
+                "end": {
+                    "line": 2,
+                    "column": 5
+                }
+            }
+        },
+        {
+            "type": "Numeric",
+            "value": "3",
+            "range": [
+                13,
+                14
+            ],
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 5
+                },
+                "end": {
+                    "line": 2,
+                    "column": 6
+                }
+            }
+        },
+        {
+            "type": "Punctuator",
+            "value": ")",
+            "range": [
+                14,
+                15
+            ],
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 6
+                },
+                "end": {
+                    "line": 2,
+                    "column": 7
+                }
+            }
+        },
+        {
+            "type": "Punctuator",
+            "value": ";",
+            "range": [
+                15,
+                16
+            ],
+            "loc": {
+                "start": {
+                    "line": 2,
+                    "column": 7
+                },
+                "end": {
+                    "line": 2,
+                    "column": 8
+                }
+            }
+        }
+    ]
+};
diff --git a/tests/fixtures/basics/void-expression.src.js b/tests/fixtures/basics/void-expression.src.js
new file mode 100644
index 0000000..7da947c
--- /dev/null
+++ b/tests/fixtures/basics/void-expression.src.js
@@ -0,0 +1,2 @@
+void 4;
+void(3);