diff --git a/gba_rules.mak b/gba_rules.mak
index 38dbec8..21e7373 100644
--- a/gba_rules.mak
+++ b/gba_rules.mak
@@ -16,7 +16,7 @@ LIBTONC	:=	$(DEVKITPRO)/libtonc
 	@echo built ... $(notdir $@)
 	@gbafix $@
 	padbin 256 $@
-	cat $@ data.gbfs >> $@
+	cat data.gbfs >> $@
 
 #---------------------------------------------------------------------------------
 %_mb.elf: