diff --git a/.gitignore b/.gitignore
index 449963153f36b..b9e60cc6b5bde 100644
--- a/.gitignore
+++ b/.gitignore
@@ -291,6 +291,11 @@ tmp-php.ini
 /junit.out.xml
 /.ccache/
 
+# ------------------------------------------------------------------------------
+# Additional test build files
+# ------------------------------------------------------------------------------
+/ext/standard/tests/helpers/bad_cmd.exe
+
 # ------------------------------------------------------------------------------
 # Special cases to invert previous ignore patterns
 # ------------------------------------------------------------------------------