diff --git a/src/video/uikit/SDL_uikitvideo.h b/src/video/uikit/SDL_uikitvideo.h
index 736888cfc..cf9004269 100644
--- a/src/video/uikit/SDL_uikitvideo.h
+++ b/src/video/uikit/SDL_uikitvideo.h
@@ -29,7 +29,7 @@
 
 @interface SDL_VideoData : NSObject
 
-@property (nonatomic) id pasteboardObserver;
+@property (nonatomic, assign) id pasteboardObserver;
 
 @end