diff --git a/Makefile b/Makefile
index e1a7424..4a51985 100644
--- a/Makefile
+++ b/Makefile
@@ -356,10 +356,10 @@
 VERSION := $(shell cat VERSION 2>/dev/null || touch VERSION)
 endif
 ifeq ($(SUBVERS),)
-SUBVERS := $(shell cat SUBVERS 2>/dev/null || touch SUBVERS)
+SUBVERS := $(shell (grep -v '^\$$' SUBVERS 2>/dev/null || touch SUBVERS) | head -n 1)
 endif
 ifeq ($(VERDATE),)
-VERDATE := $(shell cat VERDATE 2>/dev/null || touch VERDATE)
+VERDATE := $(shell (grep -v '^\$$' VERDATE 2>/dev/null || touch VERDATE) | head -n 1)
 endif
 
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