diff --git a/macosx/DragOverlayWindow.m b/macosx/DragOverlayWindow.m
index b49a16c18..8d13595a5 100644
--- a/macosx/DragOverlayWindow.m
+++ b/macosx/DragOverlayWindow.m
@@ -83,7 +83,7 @@
     
     for (NSString * file in files)
     {
-        if ([[file pathExtension] caseInsensitiveCompare: @"torrent"] == NSOrderedSame)
+        if ([[[NSWorkspace sharedWorkspace] typeOfFile: file error: NULL] isEqualToString: @"org.bittorrent.torrent"])
         {
             tr_ctor * ctor = tr_ctorNew(fLib);
             tr_ctorSetMetainfoFromFile(ctor, [file UTF8String]);