diff --git a/conf/jcs/jcs.mk b/conf/jcs/jcs.mk
index 6de673f2..3e6f13f2 100644
--- a/conf/jcs/jcs.mk
+++ b/conf/jcs/jcs.mk
@@ -12,6 +12,7 @@ INF           := $(wildcard *.inf)
 INF_DONE      := $(addsuffix .done,$(basename $(INF)))
 INF_SU_DONE   := $(addsuffix .su_done,$(basename $(INF)))
 JCS_HTTP_PATH := $(shell . /etc/jcs/jcs.conf; echo $$jcs_http_path)
+JCS            = /opt/jw-build/bin/jcs
 
 export SETUP_LOG INSTALL_LOG TEE BINDIR SBINDIR
 
@@ -30,11 +31,11 @@ define recurse_subdirs
 endef
 
 %.done: %.inf
-	sudo jcs install $<
+	sudo $(JCS) install $<
 	touch $@
 
 %.su_done: %.inf
-	sudo jcs install -b setup -f $<
+	sudo $(JCS) install -b setup -f $<
 	touch $@
 
 install_inf: $(INF_DONE)
@@ -42,7 +43,7 @@ install_inf: $(INF_DONE)
 install_inf.old: checkroot checkdirs
 	@echo "####" checking installation information files ... ;\
 	if [ -n "`find . -name '*.inf' -maxdepth 1`" ] ; then \
-		sudo jcs install *.inf ;\
+		sudo $(JCS) install *.inf ;\
 	fi |  $(TEE) -a $(INSTALL_LOG)
 
 install_link:
@@ -50,7 +51,7 @@ install_link:
 install_link.old: checkroot checkdirs
 	@echo "####" checking link information files ... ;\
 	if [ -e link.sh ] ; then \
-		jcs linkout link.sh -b install ;\
+		$(JCS) linkout link.sh -b install ;\
 	fi | $(TEE) -a $(INSTALL_LOG)
 
 setup_inf: $(INF_SU_DONE)
@@ -58,30 +59,30 @@ setup_inf: $(INF_SU_DONE)
 setup_inf.old: checkroot checkdirs
 	@echo "####" checking installation information files ... ;\
 	if [ -n "`find . -name '*.inf' -maxdepth 1`" ] ; then \
-		sudo jcs install -b setup -f *.inf ;\
+		sudo $(JCS) install -b setup -f *.inf ;\
 	fi | $(TEE) -a $(SETUP_LOG)
 
 setup_link: checkroot checkdirs
 	@echo "####" checking link information files ... ;\
 	if [ -e link.sh ] ; then \
-		jcs linkout -f -b setup link.sh ;\
+		$(JCS) linkout -f -b setup link.sh ;\
 	fi | $(TEE) -a $(SETUP_LOG)
 
 test_inf: checkdirs
 	@echo "####" testing installation information files ... ;\
 	if [ -n "`find . -name '*.inf' -maxdepth 1`" ] ; then \
-		sudo jcs install *.inf -t ;\
+		sudo $(JCS) install *.inf -t ;\
 	fi | $(TEE) -a $(INSTALL_LOG)
 
 test_link: checkdirs
 	@echo "####" testing link information files ... ;\
 	if [ -e link.sh ] ; then \
-		jcs linkout -t link.sh ;\
+		$(JCS) linkout -t link.sh ;\
 	fi | $(TEE) -a $(INSTALL_LOG)
 
 get: checkdirs
 	@echo "####" getting files. ;\
-	if [ -n "$(GETFILES)" ] ; then jcs get $(GETFILES) ; fi
+	if [ -n "$(GETFILES)" ] ; then $(JCS) get $(GETFILES) ; fi
 
 getall: $(LOCAL_GET) get $(LOCAL_POST_GET)
 	$(recurse_subdirs)