diff --git a/sc2/src/libs/log/msgbox_macosx.m b/sc2/src/libs/log/msgbox_macosx.m
index 8d1d30646..cb4adc696 100644
--- a/sc2/src/libs/log/msgbox_macosx.m
+++ b/sc2/src/libs/log/msgbox_macosx.m
@@ -28,9 +28,9 @@ log_displayBox (const /*UTF-8*/char *title, int isError,
 		return; // Oops, out of memory?
 
 	if (isError)
-		NSRunCriticalAlertPanel (titleStr, msgStr, nil, nil, nil);
+		NSRunCriticalAlertPanel (titleStr, @"%@", nil, nil, nil, msgStr);
 	else
-		NSRunInformationalAlertPanel (titleStr, msgStr, nil, nil, nil);
+		NSRunInformationalAlertPanel (titleStr, @"%@", nil, nil, nil, msgStr);
 
 	// titleStr and msgStr are autoreleased
 }