diff --git a/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs b/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs
index e4fdffc3..3f2b2b6e 100644
--- a/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs
+++ b/Source/OpenTK/Platform/MacOS/CarbonGLNative.cs
@@ -653,6 +653,8 @@ namespace OpenTK.Platform.MacOS
                         break;
                 }
 
+                OnResize();
+
                 windowState = value;
 
             }