diff --git a/target/linux/ath79/image/Makefile b/target/linux/ath79/image/Makefile
index cbd205bc78..792548657e 100644
--- a/target/linux/ath79/image/Makefile
+++ b/target/linux/ath79/image/Makefile
@@ -48,9 +48,6 @@ define Build/relocate-kernel
 	rm -rf $@.relocate
 endef
 
-define Build/copy-file
-	cat "$(1)" > "$@"
-endef
 
 define Device/Default
   ATH_SOC :=