diff --git a/src/iocCore/Makefile.Vx b/src/iocCore/Makefile.Vx
index 433e69cb1..d2e123044 100644
--- a/src/iocCore/Makefile.Vx
+++ b/src/iocCore/Makefile.Vx
@@ -24,7 +24,5 @@ include $(TOP)/config/RULES.Vx
 
 iocCore: $(IOC_CORE_OBJS)
 	$(LINK.c) $@ $(IOC_CORE_OBJS)
-ifneq ($(HOST_ARCH),WIN32)
-	@what $@
-endif
+	@$(WHAT) $@