diff --git a/tests/qemu-iotests/153 b/tests/qemu-iotests/153
index fa25eb24bd28..b3fa30817133 100755
--- a/tests/qemu-iotests/153
+++ b/tests/qemu-iotests/153
@@ -228,6 +228,23 @@ _run_cmd $QEMU_IO "${TEST_IMG}" -c 'write 0 512'
 
 _cleanup_qemu
 
+echo
+echo "== Detecting -U and force-share conflicts =="
+
+echo
+echo 'No conflict:'
+$QEMU_IMG info -U --image-opts driver=null-co,force-share=on
+echo
+echo 'Conflict:'
+$QEMU_IMG info -U --image-opts driver=null-co,force-share=off
+
+echo
+echo 'No conflict:'
+$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=on'
+echo
+echo 'Conflict:'
+$QEMU_IO -c 'open -r -U -o driver=null-co,force-share=off'
+
 # success, all done
 echo "*** done"
 rm -f $seq.full
diff --git a/tests/qemu-iotests/153.out b/tests/qemu-iotests/153.out
index 5b917b177c03..dcce03ae4d02 100644
--- a/tests/qemu-iotests/153.out
+++ b/tests/qemu-iotests/153.out
@@ -393,4 +393,20 @@ Is another process using the image?
 Closing the other
 
 _qemu_io_wrapper TEST_DIR/t.qcow2 -c write 0 512
+
+== Detecting -U and force-share conflicts ==
+
+No conflict:
+image: null-co://
+file format: null-co
+virtual size: 1.0G (1073741824 bytes)
+disk size: unavailable
+
+Conflict:
+qemu-img: --force-share/-U conflicts with image options
+
+No conflict:
+
+Conflict:
+-U conflicts with image options
 *** done