diff --git a/Makefile b/Makefile
index e756aa5..e6281a0 100644
--- a/Makefile
+++ b/Makefile
@@ -177,7 +177,7 @@ shim_cert.h: shim.cer
 
 version.c : $(TOPDIR)/version.c.in
 	sed	-e "s,@@VERSION@@,$(VERSION)," \
-		-e "s,@@UNAME@@,$(shell uname -a)," \
+		-e "s,@@UNAME@@,$(shell uname -s -m -p -i -o)," \
 		-e "s,@@COMMIT@@,$(COMMITID)," \
 		< $< > $@