diff --git a/src/corelib/plugin/qlibrary.h b/src/corelib/plugin/qlibrary.h
index ac59f45789..f3fa0d40f5 100644
--- a/src/corelib/plugin/qlibrary.h
+++ b/src/corelib/plugin/qlibrary.h
@@ -63,7 +63,7 @@ public:
         DeepBindHint = 0x10
     };
     Q_DECLARE_FLAGS(LoadHints, LoadHint)
-    Q_FLAG(LoadHint)
+    Q_ENUM(LoadHint)
     Q_FLAG(LoadHints)
 
     explicit QLibrary(QObject *parent = nullptr);
diff --git a/src/gui/painting/qpainter.h b/src/gui/painting/qpainter.h
index 4c854e0026..6446e88b0b 100644
--- a/src/gui/painting/qpainter.h
+++ b/src/gui/painting/qpainter.h
@@ -90,7 +90,7 @@ public:
         VerticalSubpixelPositioning = 0x08,
         LosslessImageRendering = 0x40,
     };
-    Q_FLAG(RenderHint)
+    Q_ENUM(RenderHint)
 
     Q_DECLARE_FLAGS(RenderHints, RenderHint)
     Q_FLAG(RenderHints)
diff --git a/src/network/socket/qlocalserver.h b/src/network/socket/qlocalserver.h
index 9106bcad45..12bd2411a8 100644
--- a/src/network/socket/qlocalserver.h
+++ b/src/network/socket/qlocalserver.h
@@ -71,7 +71,7 @@ public:
         WorldAccessOption = 0x7,
         AbstractNamespaceOption = 0x8
     };
-    Q_FLAG(SocketOption)
+    Q_ENUM(SocketOption)
     Q_DECLARE_FLAGS(SocketOptions, SocketOption)
     Q_FLAG(SocketOptions)
 
diff --git a/src/widgets/effects/qgraphicseffect.h b/src/widgets/effects/qgraphicseffect.h
index f7c0769778..f656a9b83c 100644
--- a/src/widgets/effects/qgraphicseffect.h
+++ b/src/widgets/effects/qgraphicseffect.h
@@ -163,7 +163,7 @@ public:
         QualityHint = 0x01,
         AnimationHint = 0x02
     };
-    Q_FLAG(BlurHint)
+    Q_ENUM(BlurHint)
     Q_DECLARE_FLAGS(BlurHints, BlurHint)
     Q_FLAG(BlurHints)
 
diff --git a/src/widgets/kernel/qgesture.h b/src/widgets/kernel/qgesture.h
index 312962f9bf..5ccf635e2e 100644
--- a/src/widgets/kernel/qgesture.h
+++ b/src/widgets/kernel/qgesture.h
@@ -143,7 +143,7 @@ public:
         RotationAngleChanged = 0x2,
         CenterPointChanged = 0x4
     };
-    Q_FLAG(ChangeFlag)
+    Q_ENUM(ChangeFlag)
     Q_DECLARE_FLAGS(ChangeFlags, ChangeFlag)
     Q_FLAG(ChangeFlags)