diff --git a/src/video/cocoa/SDL_cocoawindow.m b/src/video/cocoa/SDL_cocoawindow.m
index 193aebec36..1a94ddcad8 100644
--- a/src/video/cocoa/SDL_cocoawindow.m
+++ b/src/video/cocoa/SDL_cocoawindow.m
@@ -1146,7 +1146,7 @@ static NSCursor *Cocoa_GetDesiredCursor(void)
                                                       repeats:TRUE
                                                         block:^(NSTimer *unusedTimer)
     {
-        SDL_OnWindowLiveResizeUpdate(_data.window);
+        SDL_OnWindowLiveResizeUpdate(self->_data.window);
     }];
 
     [[NSRunLoop currentRunLoop] addTimer:liveResizeTimer forMode:NSRunLoopCommonModes];