diff --git a/block/vpc.c b/block/vpc.c
index 1b4c7333af..297a26262a 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -276,7 +276,8 @@ static int vpc_open(BlockDriverState *bs, QDict *options, int flags,
         if (ret < 0) {
             goto fail;
         }
-        if (strncmp(footer->creator, "conectix", 8)) {
+        if (strncmp(footer->creator, "conectix", 8) ||
+            be32_to_cpu(footer->type) != VHD_FIXED) {
             error_setg(errp, "invalid VPC image");
             ret = -EINVAL;
             goto fail;