diff --git a/src/mac/toplevel.cpp b/src/mac/toplevel.cpp
index 9bfca44e71..81cf2c6e3a 100644
--- a/src/mac/toplevel.cpp
+++ b/src/mac/toplevel.cpp
@@ -921,7 +921,7 @@ static SInt32 wxShapedMacWindowGetFeatures(WindowRef window, SInt32 param)
                         kWindowCanDrawInCurrentPort|
                         //kWindowCanMeasureTitle|
                         kWindowWantsDisposeAtProcessDeath|
-                        kWindowSupportsSetGrowImageRegion|
+                        kWindowSupportsGetGrowImageRegion|
                         kWindowDefSupportsColorGrafPort;
     return 1;
 }