diff --git a/src/adapter.c b/src/adapter.c
index 5507e63..6fef025 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -1181,7 +1181,7 @@ static void service_auth_cancel(struct service_auth *auth)
 	g_free(auth);
 }
 
-void adapter_remove_device(struct btd_adapter *adapter,
+static void adapter_remove_device(struct btd_adapter *adapter,
 						struct btd_device *dev,
 						gboolean remove_storage)
 {
diff --git a/src/adapter.h b/src/adapter.h
index 3768e0f..7d9f45d 100644
--- a/src/adapter.h
+++ b/src/adapter.h
@@ -92,10 +92,6 @@ sdp_list_t *btd_adapter_get_services(struct btd_adapter *adapter);
 
 struct btd_device *adapter_find_device(struct btd_adapter *adapter, const char *dest);
 
-void adapter_remove_device(struct btd_adapter *adapter,
-						struct btd_device *device,
-						gboolean remove_storage);
-
 const char *adapter_get_path(struct btd_adapter *adapter);
 const bdaddr_t *adapter_get_address(struct btd_adapter *adapter);
 void adapter_update_found_devices(struct btd_adapter *adapter,