diff --git a/Makefile b/Makefile
index 20738ef..cd9ce6f 100644
--- a/Makefile
+++ b/Makefile
@@ -102,6 +102,7 @@ functions.h:
 	grep -h "^[a-z]" $(SOURCES) | \
 		grep -v "int main" | \
 		grep -v "strlc" | \
+		grep -v "[a-z]:" | \
 		sed -e "s/ =.*$$//" -e "s/ *$$/;/" >> $@
 	@echo