diff --git a/target/linux/x86/image/Makefile b/target/linux/x86/image/Makefile
index 677b758e01ce19..30a903515d56ed 100644
--- a/target/linux/x86/image/Makefile
+++ b/target/linux/x86/image/Makefile
@@ -53,7 +53,7 @@ define Build/combined
 		$@ \
 		$(CONFIG_TARGET_KERNEL_PARTSIZE) $@.boot \
 		$(CONFIG_TARGET_ROOTFS_PARTSIZE) $(IMAGE_ROOTFS) \
-		256
+		1024
 endef
 
 define Build/grub-config