diff --git a/check_clientbackup b/check_clientbackup
index ef3322793dae39c9dfa5c5ae82b87518e2f1c760..d9b18fb5ee976db8a19ed28bb903ff9e7fc3e0d3 100755
--- a/check_clientbackup
+++ b/check_clientbackup
@@ -103,7 +103,7 @@ do
 done
 
 echo "--- transfer:"
-echo "$result" | grep "__[A-Z][A-Z]*__ "
+echo "$result" | grep "__[A-Z][A-Z]*__ " | grep -v "__PERFDATA__"
 echo
 echo "$result" | grep "__COUNTERS__"
 echo