diff --git a/package/network/config/ltq-vdsl-app/files/dsl_cpe_pipe.sh b/package/network/config/ltq-vdsl-app/files/dsl_cpe_pipe.sh
index 30393b281e..9002b7b316 100755
--- a/package/network/config/ltq-vdsl-app/files/dsl_cpe_pipe.sh
+++ b/package/network/config/ltq-vdsl-app/files/dsl_cpe_pipe.sh
@@ -12,7 +12,7 @@ esac
 #echo "Call dsl_pipe with $*"
 lock /var/lock/dsl_pipe
 echo $* > /tmp/pipe/dsl_cpe${pipe_no}_cmd
-result=`cat /tmp/pipe/dsl_cpe${pipe_no}_ack`
+result=$(cat /tmp/pipe/dsl_cpe${pipe_no}_ack)
 lock -u /var/lock/dsl_pipe
 
 echo "$result"