diff --git a/tests/auto/tools/moc/cxx-attributes.h b/tests/auto/tools/moc/cxx-attributes.h
index abd75afe98e..c4f27eb8c46 100644
--- a/tests/auto/tools/moc/cxx-attributes.h
+++ b/tests/auto/tools/moc/cxx-attributes.h
@@ -33,6 +33,7 @@
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_CLANG("-Wunknown-attributes")
+QT_WARNING_DISABLE_GCC("-Wattributes")
 
 class CppAttribute : public QObject
 {
diff --git a/tests/auto/tools/moc/cxx11-explicit-override-control.h b/tests/auto/tools/moc/cxx11-explicit-override-control.h
index 961d7c47c20..2fcf0fdb2d5 100644
--- a/tests/auto/tools/moc/cxx11-explicit-override-control.h
+++ b/tests/auto/tools/moc/cxx11-explicit-override-control.h
@@ -36,6 +36,9 @@
 # define sealed
 #endif
 
+QT_WARNING_PUSH
+QT_WARNING_DISABLE_GCC("-Wsuggest-override")
+
 class ExplicitOverrideControlBase : public QObject
 {
     Q_OBJECT
@@ -234,6 +237,8 @@ private Q_SLOTS:
 #endif
 };
 
+QT_WARNING_POP
+
 #ifndef Q_MOC_RUN
 # undef final
 # undef sealed
diff --git a/tests/auto/tools/moc/tst_moc.cpp b/tests/auto/tools/moc/tst_moc.cpp
index 8ce23826006..110b6b2d056 100644
--- a/tests/auto/tools/moc/tst_moc.cpp
+++ b/tests/auto/tools/moc/tst_moc.cpp
@@ -322,6 +322,8 @@ public:
     void foo(struct ForwardDeclaredStruct *);
 };
 
+QT_WARNING_PUSH
+QT_WARNING_DISABLE_GCC("-Wunused-variable")
 void StructQObject::foo(struct ForwardDeclaredStruct *)
 {
     struct Inner {
@@ -330,10 +332,11 @@ void StructQObject::foo(struct ForwardDeclaredStruct *)
 
     Q_DECL_UNUSED_MEMBER struct Inner unusedVariable;
 }
-
+QT_WARNING_POP
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_CLANG("-Wignored-qualifiers")
+QT_WARNING_DISABLE_GCC("-Wignored-qualifiers")
 
 class TestClass : public MyNamespace::TestSuperClass, public DONT_CONFUSE_MOC(MyStruct),
                   public DONT_CONFUSE_MOC_EVEN_MORE(MyStruct2, dummy, ignored)
@@ -1764,6 +1767,7 @@ void tst_Moc::QTBUG5590_dummyProperty()
 
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_CLANG("-Wignored-qualifiers")
+QT_WARNING_DISABLE_GCC("-Wignored-qualifiers")
 class QTBUG7421_ReturnConstTemplate: public QObject
 { Q_OBJECT
 public slots: