diff --git a/tools/Unix.mk b/tools/Unix.mk
index 7c0428b0bf8..db56615c759 100644
--- a/tools/Unix.mk
+++ b/tools/Unix.mk
@@ -57,7 +57,7 @@ else
 # Only update .version if the contents of version.tmp actually changes
 # Note: this is executed before any rule is run
 
-$(shell tools/version.sh .version.tmp > /dev/null)
+$(shell tools/version.sh $(VERSION_ARG) .version.tmp > /dev/null)
 $(shell $(call TESTANDREPLACEFILE, .version.tmp, .version))
 endif