diff --git a/package/busybox/busybox.mk b/package/busybox/busybox.mk
index f6f542e22d..948f3e42d3 100644
--- a/package/busybox/busybox.mk
+++ b/package/busybox/busybox.mk
@@ -135,7 +135,7 @@ endef
 endif
 
 define BUSYBOX_COPY_CONFIG
-	cp -f $(BUSYBOX_CONFIG_FILE) $(BUSYBOX_BUILD_CONFIG)
+	$(INSTALL) -D -m 0644 $(BUSYBOX_CONFIG_FILE) $(BUSYBOX_BUILD_CONFIG)
 endef
 
 # Disable shadow passwords support if unsupported by the C library