diff --git a/compiler/test/dotty/tools/repl/ReplCompilerTests.scala b/compiler/test/dotty/tools/repl/ReplCompilerTests.scala
index efe6876c269b..7a748b3e29a6 100644
--- a/compiler/test/dotty/tools/repl/ReplCompilerTests.scala
+++ b/compiler/test/dotty/tools/repl/ReplCompilerTests.scala
@@ -51,7 +51,7 @@ class ReplCompilerTests extends ReplTest {
       "val res1: Int = 20"
     )
 
-    assertEquals(expected, storedOutput().split("\n").toList)
+    assertEquals(expected, lines())
   }
 
   @Test def testImportMutable =
@@ -122,6 +122,9 @@ class ReplCompilerTests extends ReplTest {
     )
 
     run(source)
-    assertEquals(expected, storedOutput().split("\n").toList)
+    assertEquals(expected, lines())
   }
+
+  private def lines() = storedOutput().trim().lines.toList
+
 }
diff --git a/compiler/test/dotty/tools/repl/ScriptedTests.scala b/compiler/test/dotty/tools/repl/ScriptedTests.scala
index 090d49949d08..3936702e4499 100644
--- a/compiler/test/dotty/tools/repl/ScriptedTests.scala
+++ b/compiler/test/dotty/tools/repl/ScriptedTests.scala
@@ -44,7 +44,7 @@ class ScriptedTests extends ReplTest with MessageRendering {
     def evaluate(state: State, input: String, prompt: String) =
       try {
         val nstate = run(input.drop(prompt.length))(state)
-        val out = input + "\n" + storedOutput()
+        val out = (input :: storedOutput().trim().lines.toList).mkString(System.lineSeparator())
         (out, nstate)
       }
       catch {
@@ -60,7 +60,7 @@ class ScriptedTests extends ReplTest with MessageRendering {
       }
 
     val expectedOutput =
-      Source.fromFile(f).getLines().flatMap(filterEmpties).mkString("\n")
+      Source.fromFile(f).getLines().flatMap(filterEmpties).mkString(System.lineSeparator)
     val actualOutput = {
       resetToInitial()
       val inputRes = extractInputs(prompt)
@@ -70,7 +70,7 @@ class ScriptedTests extends ReplTest with MessageRendering {
         buf.append(out)
         nstate
       }
-      buf.flatMap(filterEmpties).mkString("\n")
+      buf.flatMap(filterEmpties).mkString(System.lineSeparator)
     }
 
     if (expectedOutput != actualOutput) {