diff --git a/appshell/cef_dark_aero_window.cpp b/appshell/cef_dark_aero_window.cpp
index 039a12f4c..f031ee5e4 100644
--- a/appshell/cef_dark_aero_window.cpp
+++ b/appshell/cef_dark_aero_window.cpp
@@ -843,6 +843,10 @@ LRESULT cef_dark_aero_window::WindowProc(UINT message, WPARAM wParam, LPARAM lPa
                 return 0L;
         }
         break;
+	case WM_NCPAINT:
+		if (HandleNcPaint((HRGN)wParam))
+			return 0L;
+		break;
     }
 
     // call DefWindowProc?