diff --git a/pandora_server/util/plugin/udp_nmap_plugin.sh b/pandora_server/util/plugin/udp_nmap_plugin.sh
index 5fd4b8336c..c4aad031a9 100755
--- a/pandora_server/util/plugin/udp_nmap_plugin.sh
+++ b/pandora_server/util/plugin/udp_nmap_plugin.sh
@@ -55,5 +55,4 @@ then
 fi
 
 # execution
-nmap -T5 -p $PORT -sU $HOST | grep open | wc -l 2> /dev/null
-
+nmap -T5 -p $PORT -sU $HOST | grep open |grep -v filtered| wc -l 2> /dev/null
\ No newline at end of file