diff --git a/cocoa.m b/cocoa.m
index fba6c2160..d41517b08 100644
--- a/cocoa.m
+++ b/cocoa.m
@@ -430,7 +430,7 @@ static void QZ_SetPortAlphaOpaque ()
         
         [op setMessage:@"Select the disk image you want to boot.\n\nHit the \"Cancel\" button to quit"];
         
-        [op beginSheetForDirectory:nil file:nil types:[NSArray arrayWithObjects:@"img",@"iso",nil]
+        [op beginSheetForDirectory:nil file:nil types:[NSArray arrayWithObjects:@"img",@"iso",@"dmg",@"qcow",@"cow",@"cloop",@"vmdk",nil]
               modalForWindow:window modalDelegate:self
               didEndSelector:@selector(openPanelDidEnd:returnCode:contextInfo:) contextInfo:NULL];
     }