diff --git a/config/tools/Makefile b/config/tools/Makefile
index a6a6a3d61..b62b39e07 100644
--- a/config/tools/Makefile
+++ b/config/tools/Makefile
@@ -15,7 +15,7 @@ TOP=../..
 
 include $(TOP)/configure/CONFIG
 
-ifeq ($(findstring ,YES,$(COMPAT_313) $(COMPAT_TOOLS_313)),YES)
+ifeq ($(findstring YES,$(COMPAT_313) $(COMPAT_TOOLS_313)),YES)
 SCRIPTS_HOST += $(subst ../,,$(wildcard ../*.pl)) 
 SCRIPTS_HOST += installEpics
 endif