diff --git a/src/corelib/kernel/qsystemsemaphore.cpp b/src/corelib/kernel/qsystemsemaphore.cpp
index f91b841618..c4505ea989 100644
--- a/src/corelib/kernel/qsystemsemaphore.cpp
+++ b/src/corelib/kernel/qsystemsemaphore.cpp
@@ -326,3 +326,5 @@ QString QSystemSemaphore::errorString() const
 #endif // QT_CONFIG(systemsemaphore)
 
 QT_END_NAMESPACE
+
+#include "moc_qsystemsemaphore.cpp"
diff --git a/src/corelib/kernel/qsystemsemaphore.h b/src/corelib/kernel/qsystemsemaphore.h
index f9d6240cd0..7843ec8f04 100644
--- a/src/corelib/kernel/qsystemsemaphore.h
+++ b/src/corelib/kernel/qsystemsemaphore.h
@@ -17,6 +17,7 @@ class QSystemSemaphorePrivate;
 
 class Q_CORE_EXPORT QSystemSemaphore
 {
+    Q_GADGET
     Q_DECLARE_TR_FUNCTIONS(QSystemSemaphore)
 public:
     enum AccessMode
@@ -24,6 +25,7 @@ public:
         Open,
         Create
     };
+    Q_ENUM(AccessMode)
 
     enum SystemSemaphoreError
     {