diff --git a/package/nvram/Makefile b/package/nvram/Makefile
index f064b5fe3..4a57de2e3 100644
--- a/package/nvram/Makefile
+++ b/package/nvram/Makefile
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
+# Copyright (C) 2009-2010 Jo-Philipp Wich <xm@subsignal.org>
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nvram
-PKG_RELEASE:=6
+PKG_RELEASE:=7
 
 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 
diff --git a/package/nvram/files/nvram.init b/package/nvram/files/nvram.init
index 9eae17fd8..0267a80c5 100755
--- a/package/nvram/files/nvram.init
+++ b/package/nvram/files/nvram.init
@@ -52,7 +52,13 @@ fixup_linksys() {
 			}
 		;;
 		"1071") #0x042f
-			nvram_set sdram_init "$(printf 0x%04x $(( $(/usr/sbin/nvram get sdram_init) | 0x0009 )))"
+			# do sanity check first! max 0x0011 = 128mb
+			SDRAM_INIT=$(printf %d $(/usr/sbin/nvram get sdram_init))
+			[ "$SDRAM_INIT" -lt "9" -o "$SDRAM_INIT" -gt "17" ] && {
+				# set this to default: 0x09 only if value is invaild like 16MB on Asus WL-500GP
+				echo "sdram_init is invaild: $(printf 0x%04x $SDRAM_INIT), force to default!"
+				nvram_set sdram_init 0x0009
+			}
 			[ "$COMMIT" = 1 ] && {
 				nvram_set sdram_ncdl 0x0
 			}