diff --git a/net/mac80211/rc80211_minstrel.h b/net/mac80211/rc80211_minstrel.h
index 38bf4168..9372656f 100644
--- a/net/mac80211/rc80211_minstrel.h
+++ b/net/mac80211/rc80211_minstrel.h
@@ -80,6 +80,11 @@
 	unsigned int lookaround_rate_mrr;
 };
 
+struct minstrel_debugfs_info {
+	size_t len;
+	char buf[];
+};
+
 void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
 void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);