diff --git a/src/p2p/p2p.c b/src/p2p/p2p.c
index 43f8673..c616112 100644
--- a/src/p2p/p2p.c
+++ b/src/p2p/p2p.c
@@ -1160,7 +1160,8 @@ static int p2p_prepare_channel_pref(struct 
p2p_data *p2p,
  }


-static void p2p_prepare_channel_best(struct p2p_data *p2p)
+static void p2p_prepare_channel_best(struct p2p_data *p2p,
+                    unsigned int *best_freq)
  {
      u8 op_class, op_channel;