diff --git a/tools/perf/scripts/python/sched-migration.py b/tools/perf/scripts/python/sched-migration.py
index 7304d86..e9898c5 100644
--- a/tools/perf/scripts/python/sched-migration.py
+++ b/tools/perf/scripts/python/sched-migration.py
@@ -260,8 +260,7 @@
 	}
 
 	if state not in states:
-		print "Unhandled task state %d" % state
-		return ""
+		return "Unknown"
 
 	return states[state]