diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c
index fa36ed4e8..ca41cf824 100644
--- a/scst/src/dev_handlers/scst_vdisk.c
+++ b/scst/src/dev_handlers/scst_vdisk.c
@@ -705,6 +705,7 @@ static int vdisk_get_file_size(const struct scst_vdisk_dev *virt_dev,
 		goto out;
 	}
 	*file_size = res;
+	res = 0;
 
 out:
 	TRACE_EXIT_RES(res);