diff --git a/Makefile b/Makefile
index c83ca4eb43b788adb218277defb25964d491f831..62fd5c8d40c65cce9806c0cf144bf456d65a0c87 100644
--- a/Makefile
+++ b/Makefile
@@ -15,5 +15,5 @@ valgrindmake: ex-lepl1503.c
 	valgrind --xml=yes --xml-file="valgrind.xml" --leak-check=yes ./ex-lepl1503
 
 clean:
-	rm *.xml
-	rm ex-lepl1503
+	rm -f *.xml
+	rm -f ex-lepl1503