diff --git a/src/core/gui.coffee b/src/core/gui.coffee
index 37970d6..9b65dca 100644
--- a/src/core/gui.coffee
+++ b/src/core/gui.coffee
@@ -84,6 +84,7 @@ self.OS.GUI =
             try
                 arr.filter (m, i) ->
                     if mime.match (new RegExp m, "g")
+                        return false if (apps.indexOf metas[idx]) > 0
                         apps.push metas[idx]
                         return false
                     return false