diff --git a/include/image-commands.mk b/include/image-commands.mk
index b394a8153e..fe0d10536b 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -204,6 +204,14 @@ define Build/jffs2
 	@mv $@.new $@
 endef
 
+define Build/kernel2minor
+	$(eval temp_file := $(shell mktemp))
+	cp $@ $(temp_file)
+	kernel2minor -k $(temp_file) -r $(temp_file).new $(1)
+	mv $(temp_file).new $@
+	rm -f $(temp_file)
+endef
+
 define Build/kernel-bin
 	rm -f $@
 	cp $< $@
@@ -412,8 +420,3 @@ define Build/append-metadata
 		fwtool -S "$@.ucert" "$@" ;\
 	}
 endef
-
-define Build/kernel2minor
-	kernel2minor -k $@ -r $@.new $(1)
-	mv $@.new $@
-endef