diff --git a/nagios/check_netstat_connectioncount.sh b/nagios/check_netstat_connectioncount.sh
index 896e41f..b1c3c1a 100755
--- a/nagios/check_netstat_connectioncount.sh
+++ b/nagios/check_netstat_connectioncount.sh
@@ -153,8 +153,8 @@ while getopts hw:c:p: f; do
 			esac
 
 			# mémo : 'label'=value[UOM];[warn];[crit];[min];[max]
-			OUTPUT_PERFDATA=$( printf "%s'%s'=%d;%s;%s;0;" \
-					"$( test -n "$OUTPUT_PERFDATA" && echo "$OUTPUT_PERFDATA " )" \
+			OUTPUT_PERFDATA=$( printf "%s\n'%s'=%d;%s;%s;0;" \
+					"$OUTPUT_PERFDATA" \
 					"$LABEL" \
 					"$CPT" \
 					"$RANGE_WARNING" \
@@ -193,6 +193,7 @@ case "$OUTPUT_EXIT_STATUS" in
 		;;
 esac
 
-printf "|%s\n" "$OUTPUT_PERFDATA"
+# We sort the entries to avoid mismatch with poor implementations of pnp4nagios
+printf "|%s\n" "$( printf "%s" "$OUTPUT_PERFDATA" | grep -v "^$" | sort | tr "\n" " " )"
 # on supprime les retours à la ligne
 exit $OUTPUT_EXIT_STATUS