diff --git a/cluster/addons/addon-manager/Makefile b/cluster/addons/addon-manager/Makefile
index 518412f6306..39d0f5e1aee 100644
--- a/cluster/addons/addon-manager/Makefile
+++ b/cluster/addons/addon-manager/Makefile
@@ -51,13 +51,13 @@ build:
 
 ifeq ($(ARCH),amd64)
 	# When building "normally" for amd64, remove the whole line, it has no part in the amd64 image
-	cd $(TEMP_DIR) && sed -i "/CROSS_BUILD_/d" Dockerfile
+	cd $(TEMP_DIR) && sed -i.back "/CROSS_BUILD_/d" Dockerfile
 else
 	# When cross-building, only the placeholder "CROSS_BUILD_" should be removed
 	# Register /usr/bin/qemu-ARCH-static as the handler for other-arch binaries in the kernel
 	docker run --rm --privileged multiarch/qemu-user-static:register --reset
 	curl -sSL --retry 5 https://github.com/multiarch/qemu-user-static/releases/download/v2.5.0/x86_64_qemu-$(QEMUARCH)-static.tar.xz | tar -xJ -C $(TEMP_DIR)
-	cd $(TEMP_DIR) && sed -i "s/CROSS_BUILD_//g" Dockerfile
+	cd $(TEMP_DIR) && sed -i.back "s/CROSS_BUILD_//g" Dockerfile
 endif
 
 	docker build -t $(IMAGE)-$(ARCH):$(VERSION) $(TEMP_DIR)