diff --git a/config/Config-images.in b/config/Config-images.in
index cbf1e9f26d..396f1dd3e3 100644
--- a/config/Config-images.in
+++ b/config/Config-images.in
@@ -292,6 +292,7 @@ menu "Target Images"
 		depends on USES_BOOT_PART
 		default 8 if TARGET_apm821xx_sata
 		default 64 if TARGET_bcm27xx
+		default 128 if TARGET_armvirt
 		default 16
 
 	config TARGET_ROOTFS_PARTSIZE