diff --git a/root/amery/Makefile b/root/amery/Makefile
index 6dcbf06..34b77d3 100644
--- a/root/amery/Makefile
+++ b/root/amery/Makefile
@@ -27,7 +27,7 @@ all: $(ZONES)
 clean:
 	@rm -f $(ZONES)
 
-%.zone: %.zone.in Makefile
+%.zone: %.zone.in Makefile $(wildcard ../*.in)
 	@echo " [$*] $@.in -> $@"
 	@sed	-e 's,@@GOOGLEMX@@,$(GOOGLEMX),' \
 		-e 's,@@DOMAIN@@,$*,g' \