diff --git a/Makefile b/Makefile
index 20decae..354a4e8 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,8 @@ check:
 	@for name in `git diff --name-only`; do \
 		echo $${name} | egrep '\.pp$$' > /dev/null || continue ; \
 		errors="`puppet --color=false --parseonly --ignoreimport $${name}`" ; \
-		[ $$? -eq 0 ] && continue ; \
-		echo "syntax check failed on $${name}" 1>&2 ; \
-		echo "  $${errors}" 1>&2 ; \
+		[ $$? -eq 0 ] || echo "$${errors}" 1>&2 ; \
+		errors="`egrep --line-number '[[:space:]]$$' $${name}`" ; \
+		[ $$? -eq 0 ] && echo "$${name}: trailing white spaces on" \
+			"line $${errors}" 1>&2 ; \
 	done
\ No newline at end of file