diff --git a/tests/auto/tools/moc/backslash-newlines.h b/tests/auto/tools/moc/backslash-newlines.h
index 899cb5d2fa..63ab00f8a9 100644
--- a/tests/auto/tools/moc/backslash-newlines.h
+++ b/tests/auto/tools/moc/backslash-newlines.h
@@ -30,6 +30,7 @@ public slots:
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_CLANG("-Wcomment")
+QT_WARNING_DISABLE_GCC("-Wcomment")
 
 // ends with \\\r should not make moc crash (QTBUG-53441) (no new lines on purpose!!) \