diff --git a/src/ext_mod.erl b/src/ext_mod.erl
index 5da3b34e7..7eea46a93 100644
--- a/src/ext_mod.erl
+++ b/src/ext_mod.erl
@@ -1195,7 +1195,7 @@ is_elixir_module(Module) ->
           filelib:wildcard(Src++"/*.{erl}")} of
         {[_ | _], []} ->
             true;
-        {[], [_ | _]} ->
+        {[], _} ->
             false
     end.