diff --git a/vs2015/sdl/src/video/quartz/SDL_QuartzWM.m b/vs2015/sdl/src/video/quartz/SDL_QuartzWM.m
index ae33780e83b..edd4222b5c5 100644
--- a/vs2015/sdl/src/video/quartz/SDL_QuartzWM.m
+++ b/vs2015/sdl/src/video/quartz/SDL_QuartzWM.m
@@ -55,8 +55,8 @@ void QZ_FreeWMCursor     (_THIS, WMcursor *cursor) {
     
     /* copy data and mask, extending the mask to all black pixels because the inversion effect doesn't work with Cocoa's alpha-blended cursors */
     for (i = 0; i < (w+7)/8*h; i++) {
-        planes[0][i] = data[i] ^ 0xFF;
-        planes[1][i] = mask[i] | data[i];
+        planes[0][i] = ~data[i] & mask[i];
+        planes[1][i] =  mask[i] | data[i];
     }
 
     /* create image and cursor */