diff --git a/Makefile b/Makefile
index 80d52ac..375bc81 100644
--- a/Makefile
+++ b/Makefile
@@ -10,4 +10,4 @@ debug:
 check: debug
 	-@./rebar xref
 	-@dialyzer ebin --verbose -Wunmatched_returns -Werror_handling \
-		-Wrace_conditions -Wunderspecs
+		-Wrace_conditions