diff --git a/src/Makefile b/src/Makefile
index f0a03f5a7..e42b8e833 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -27,7 +27,9 @@ DIRS += rsrv
 DIRS += rec
 DIRS += dev
 #Following are optional
+ifeq ($(findstring vxWorks,$(BUILD_ARCHS)),vxWorks)
 DIRS += vxWorks
+endif
 #DIRS += gdd
 #DIRS += cas