diff --git a/include/configs/dreamplug.h b/include/configs/dreamplug.h
index 76f9eea..2a58aa1 100644
--- a/include/configs/dreamplug.h
+++ b/include/configs/dreamplug.h
@@ -59,6 +59,7 @@
  * Commands configuration
  */
 #define CONFIG_SYS_NO_FLASH            /* Declare no flash (NOR/SPI) */
+#define CONFIG_SYS_MVFS
 #include <config_cmd_default.h>
 #define CONFIG_CMD_DHCP
 #define CONFIG_CMD_ENV
diff --git a/include/configs/mv-common.h b/include/configs/mv-common.h
index 405a842..8538d12 100644
--- a/include/configs/mv-common.h
+++ b/include/configs/mv-common.h
@@ -157,6 +157,7 @@
  */
 #ifdef CONFIG_SYS_MVFS
 #define CONFIG_CMD_EXT2
+#define CONFIG_CMD_EXT4
 #define CONFIG_CMD_JFFS2
 #define CONFIG_CMD_FAT
 #define CONFIG_CMD_UBI