diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index ee94ea0c67e9f164c71d359b9c4dbb3812d25541..da8497ef7063944a191653b1145a6b6a74627139 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -680,7 +680,7 @@ TRACE_EVENT(drv_ampdu_action,
 		__entry->ret = ret;
 		__entry->action = action;
 		__entry->tid = tid;
-		__entry->ssn = *ssn;
+		__entry->ssn = ssn ? *ssn : 0;
 	),
 
 	TP_printk(