diff --git a/config/RULES.ioc b/config/RULES.ioc
index 102fdb011..adf60b17f 100644
--- a/config/RULES.ioc
+++ b/config/RULES.ioc
@@ -26,7 +26,9 @@ ifndef WIN32
 	ln -s $(TARGETBIN)/vxWorks vxWorks
 	ln -s $(TARGETBIN)/vxWorks.sym vxWorks.sym
 	ln -s $(TOP)/dbd dbd
+ifdef SHARE
 	ln -s $(SHARE) share
+endif
 	@for dir in $(APPDIR) scum ; do  \
 		if [ $$dir = scum ]; then \
 			: ; \