diff --git a/configure/os/CONFIG.Common.vxWorks-486 b/configure/os/CONFIG.Common.vxWorks-486
index 456852cc6..bbde1b4cd 100644
--- a/configure/os/CONFIG.Common.vxWorks-486
+++ b/configure/os/CONFIG.Common.vxWorks-486
@@ -20,4 +20,6 @@ ARCH_DEP_CFLAGS = -m486
 ARCH_DEP_CXXFLAGS += -x 'c++' 
 ARCH_DEP_CFLAGS += -fno-defer-pop
 
+# Allow site overrides
+-include $(CONFIG)/os/CONFIG_SITE.Common.vxWorks-486