diff --git a/src/device.c b/src/device.c
index ce307c3..2eefc53 100644
--- a/src/device.c
+++ b/src/device.c
@@ -538,7 +538,7 @@ static void device_free(gpointer user_data)
 	g_free(device);
 }
 
-gboolean device_is_bredr(struct btd_device *device)
+static gboolean device_is_bredr(struct btd_device *device)
 {
 	return (device->bdaddr_type == BDADDR_BREDR);
 }
diff --git a/src/device.h b/src/device.h
index f896a00..0789ffd 100644
--- a/src/device.h
+++ b/src/device.h
@@ -64,7 +64,6 @@ void device_remove_profile(gpointer a, gpointer b);
 struct btd_adapter *device_get_adapter(struct btd_device *device);
 const bdaddr_t *device_get_address(struct btd_device *device);
 const char *device_get_path(const struct btd_device *device);
-gboolean device_is_bredr(struct btd_device *device);
 gboolean device_is_le(struct btd_device *device);
 gboolean device_is_temporary(struct btd_device *device);
 gboolean device_is_paired(struct btd_device *device);