diff --git a/Makefile b/Makefile
index 4c61dd6..a864971 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,7 @@ clean:
 distclean: clean
 	./rebar delete-deps
 
-DIALYZER_APPS = kernel stdlib erts sasl eunit syntax_tools compiler crypto
+DIALYZER_APPS = kernel stdlib erts sasl eunit syntax_tools compiler crypto \
+				common_test
 
 include tools.mk
diff --git a/src/lager_common_test_backend.erl b/src/lager_common_test_backend.erl
index 9ed0dfc..2d5c426 100644
--- a/src/lager_common_test_backend.erl
+++ b/src/lager_common_test_backend.erl
@@ -39,7 +39,7 @@ bounce() ->
     bounce(error).
 
 bounce(Level) ->
-    application:stop(lager),
+    _ = application:stop(lager),
     lager:start(),
     gen_event:add_handler(lager_event, lager_common_test_backend, [Level, false]),
     %lager:set_loglevel(lager_common_test_backend, Level),
@@ -88,7 +88,7 @@ handle_call(get_loglevel, #state{level=Level} = State) ->
 handle_call({set_loglevel, Level}, State) ->
     case lists:member(Level, ?LEVELS) of
         true ->
-            {ok, ok, State#state{level=lager_util:level_to_num(Level)}};
+            {ok, ok, State#state{level=lager_util:config_to_mask(Level)}};
         _ ->
             {ok, {error, bad_log_level}, State}
     end;