diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 01d2101d09..8f2fb9f10b 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -371,8 +371,8 @@ static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev)
     return 0;
 }
 
-int vhost_vdpa_get_device_id(struct vhost_dev *dev,
-                                   uint32_t *device_id)
+static int vhost_vdpa_get_device_id(struct vhost_dev *dev,
+                                    uint32_t *device_id)
 {
     int ret;
     ret = vhost_vdpa_call(dev, VHOST_VDPA_GET_DEVICE_ID, device_id);
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
index 9b81a409da..28ca65018e 100644
--- a/include/hw/virtio/vhost-vdpa.h
+++ b/include/hw/virtio/vhost-vdpa.h
@@ -22,6 +22,4 @@ typedef struct vhost_vdpa {
 } VhostVDPA;
 
 extern AddressSpace address_space_memory;
-extern int vhost_vdpa_get_device_id(struct vhost_dev *dev,
-                                   uint32_t *device_id);
 #endif