diff --git a/Makefile b/Makefile
index 7ad05d9..4d50c67 100644
--- a/Makefile
+++ b/Makefile
@@ -12,4 +12,4 @@ build :
 
 check : build
 	mkdir -p check
-	cd check && R CMD check ../build/*.tar.gz
+	cd check && R CMD check --as-cran ../build/*.tar.gz