diff --git a/tests/qemu-iotests/059 b/tests/qemu-iotests/059
index ca5aa16ff7a8633c9bf918ee6621c8b799dd763d..26a2fd3e0ee71434f204cf727f97b4d6231a3ee3 100755
--- a/tests/qemu-iotests/059
+++ b/tests/qemu-iotests/059
@@ -103,6 +103,13 @@ IMGOPTS="subformat=monolithicSparse" _make_test_img 100G
 truncate -s 10M $TEST_IMG
 _img_info
 
+echo
+echo "=== Converting to streamOptimized from image with small cluster size==="
+TEST_IMG="$TEST_IMG.qcow2" IMGFMT=qcow2 IMGOPTS="cluster_size=4096" _make_test_img 1G
+$QEMU_IO -c "write -P 0xa 0 512" "$TEST_IMG.qcow2" | _filter_qemu_io
+$QEMU_IO -c "write -P 0xb 10240 512" "$TEST_IMG.qcow2" | _filter_qemu_io
+$QEMU_IMG convert -f qcow2 -O vmdk -o subformat=streamOptimized "$TEST_IMG.qcow2" "$TEST_IMG" 2>&1
+
 echo
 echo "=== Testing version 3 ==="
 _use_sample_img iotest-version3.vmdk.bz2
diff --git a/tests/qemu-iotests/059.out b/tests/qemu-iotests/059.out
index 14c09571262eecd93ec7ae1504ff6616db136f76..eba0dedda0ba4400b314e8193ba41109bff8a70b 100644
--- a/tests/qemu-iotests/059.out
+++ b/tests/qemu-iotests/059.out
@@ -2046,6 +2046,13 @@ RW 12582912 VMFS "dummy.IMGFMT" 1
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=107374182400
 qemu-img: Could not open 'TEST_DIR/t.IMGFMT': File truncated, expecting at least 13172736 bytes
 
+=== Converting to streamOptimized from image with small cluster size===
+Formatting 'TEST_DIR/t.vmdk.IMGFMT', fmt=IMGFMT size=1073741824
+wrote 512/512 bytes at offset 0
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 512/512 bytes at offset 10240
+512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
 === Testing version 3 ===
 image: TEST_DIR/iotest-version3.IMGFMT
 file format: IMGFMT