diff --git a/src/platform/cocoamain.mm b/src/platform/cocoamain.mm
index 6712adc..7fd2a6e 100644
--- a/src/platform/cocoamain.mm
+++ b/src/platform/cocoamain.mm
@@ -221,6 +221,9 @@ CONVERT(Rect)
 
     CGContextDrawImage((CGContextRef) [[NSGraphicsContext currentContext] graphicsPort],
                        [self bounds], image);
+
+    CGImageRelease(image);
+    CGDataProviderRelease(provider);
 }
 
 - (void)drawGL {