diff --git a/app/src/main/kotlin/com/tutpro/baresip/Api.kt b/app/src/main/kotlin/com/tutpro/baresip/Api.kt
index 3cb7d6f2..ae3b37c7 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Api.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Api.kt
@@ -63,6 +63,7 @@ object Api {
     external fun account_dtmfmode(acc: Long): Int
     external fun account_set_dtmfmode(acc: Long, mode: Int): Int
     external fun account_extra(acc: Long): String
+    @Suppress("unused")
     external fun account_debug(acc: Long)
 
     external fun uag_reset_transp(register: Boolean, reinvite: Boolean)