diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index cef6d068..65045500 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -4616,7 +4616,6 @@ sub set_migration_caps {
 	"auto-converge" => 1,
 	"xbzrle" => 1,
 	"x-rdma-pin-all" => 0,
-	"zero-blocks" => 0,
 	"dirty-bitmaps" => $dirty_bitmaps,
     };