diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index b8e0967c5c21..91cab5f669d2 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -2331,6 +2331,7 @@ void clear_probe_trace_event(struct probe_trace_event *tev)
 		}
 	}
 	zfree(&tev->args);
+	tev->nargs = 0;
 }
 
 struct kprobe_blacklist_node {