diff --git a/modules/audio/audio_policy.c b/modules/audio/audio_policy.c
index 409f0a1..ca8b054 100644
--- a/modules/audio/audio_policy.c
+++ b/modules/audio/audio_policy.c
@@ -58,7 +58,7 @@
     return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
 }
 
-static void ap_set_phone_state(struct audio_policy *pol, int state)
+static void ap_set_phone_state(struct audio_policy *pol, audio_mode_t state)
 {
 }