diff --git a/le.sh b/le.sh
index 47dc792..2f1f63d 100755
--- a/le.sh
+++ b/le.sh
@@ -353,13 +353,17 @@ _startserver() {
     _NC="$_NC -p"
   fi
 
-  _debug nc "$_NC"
+  _debug "$_NC $Le_HTTPPort"
 #  while true ; do
     if [ "$DEBUG" ] ; then
       echo -e -n "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC $Le_HTTPPort -vv
     else
       echo -e -n "HTTP/1.1 200 OK\r\n\r\n$content" | $_NC $Le_HTTPPort > /dev/null
     fi
+    if [ "$?" != "0" ] ; then
+      _err "nc listen error."
+      return 1
+    fi
 #  done
 }