diff --git a/tests/qemu-iotests/063 b/tests/qemu-iotests/063
index 2ab8f20..77503a2 100755
--- a/tests/qemu-iotests/063
+++ b/tests/qemu-iotests/063
@@ -44,6 +44,9 @@
 _supported_fmt qcow qcow2 vmdk qed raw
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" \
+                     "subformat=twoGbMaxExtentFlat" \
+                     "subformat=twoGbMaxExtentSparse"
 
 _make_test_img 4M