diff --git a/initrd/etc/functions b/initrd/etc/functions
index 553f4b27..1f7896ac 100755
--- a/initrd/etc/functions
+++ b/initrd/etc/functions
@@ -229,8 +229,8 @@ replace_config() {
 
 # then copy any remaining settings from the existing config file, minus the option you changed
 	grep -v "^export ${CONFIG_OPTION}=" ${CONFIG_FILE} | grep -v "^${CONFIG_OPTION}=" >> ${CONFIG_FILE}.tmp || true
-
-	mv ${CONFIG_FILE}.tmp ${CONFIG_FILE}
+  sort ${CONFIG_FILE}.tmp | uniq > ${CONFIG_FILE}
+	rm -f ${CONFIG_FILE}.tmp
 }
 combine_configs() {
 	cat /etc/config* > /tmp/config