diff --git a/src/ocf_volume.c b/src/ocf_volume.c
index 7387479..329a08a 100644
--- a/src/ocf_volume.c
+++ b/src/ocf_volume.c
@@ -123,8 +123,11 @@ void ocf_volume_deinit(ocf_volume_t volume)
 
 	env_free(volume->priv);
 
-	if (volume->uuid_copy && volume->uuid.data)
+	if (volume->uuid_copy && volume->uuid.data) {
 		env_vfree(volume->uuid.data);
+		volume->uuid.data = NULL;
+		volume->uuid.size = 0;
+	}
 }
 
 void ocf_volume_move(ocf_volume_t volume, ocf_volume_t from)