1 files changed, 0 insertions, 3 deletions

diff --git a/src/macfns.c b/src/macfns.c
index dfe11074a4c..49c72e1bf4f 100644
--- a/src/macfns.c
+++ b/src/macfns.c
@@ -2253,9 +2253,6 @@ mac_window (f)
                    kWindowStandardDocumentAttributes
 #ifdef MAC_OSX
                    | kWindowToolbarButtonAttribute
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1030
-                   | kWindowAsyncDragAttribute
-#endif
 #endif
                    , &r, &FRAME_MAC_WINDOW (f));
   if (FRAME_MAC_WINDOW (f))