diff --git a/release/src-rt-6.x.4708/router/others/wwansignal b/release/src-rt-6.x.4708/router/others/wwansignal
index 6c4afa4ae1..e0d8470c58 100755
--- a/release/src-rt-6.x.4708/router/others/wwansignal
+++ b/release/src-rt-6.x.4708/router/others/wwansignal
@@ -1,5 +1,5 @@
 #!/bin/sh
-
+export PATH=/bin:/usr/bin:/sbin:/usr/sbin:/home/root:
 #
 # Copyright (C) 2015 shibby
 #