diff --git a/Make/helprules b/Make/helprules
index 42b210c44..6e85bfcfb 100644
--- a/Make/helprules
+++ b/Make/helprules
@@ -1,5 +1,5 @@
 help:
-	@$(TOPDIR)/Make/help.sh\
+	@sh $(TOPDIR)/Make/help.sh\
 		$(OS)\
 		$(TOPDIR)\
 		$(INST_LIBS)\