diff --git a/src/video/win32_v.cpp b/src/video/win32_v.cpp
--- a/src/video/win32_v.cpp
+++ b/src/video/win32_v.cpp
@@ -680,7 +680,7 @@ static LRESULT CALLBACK WndProcGdi(HWND 
 
 		case WM_PALETTECHANGED:
 			if ((HWND)wParam == hwnd) return 0;
-			/* FALL THROUGH */
+			FALLTHROUGH;
 
 		case WM_QUERYNEWPALETTE: {
 			HDC hDC = GetWindowDC(hwnd);