diff --git a/test/t-lvconvert-mirror.sh b/test/t-lvconvert-mirror.sh
index 3a58f3548..ace6a0d26 100644
--- a/test/t-lvconvert-mirror.sh
+++ b/test/t-lvconvert-mirror.sh
@@ -222,6 +222,7 @@ check mirror_legs $vg $lv1 2
 # BZ 463272: disk log mirror convert option is lost if downconvert option is also given
 aux prepare_vg 5
 lvcreate -l1 -m2 --corelog -n $lv1 $vg $dev1 $dev2 $dev3
+while [ `lvs --noheadings -o copy_percent $vg/$lv1` != "100.00" ]; do sleep 1; done
 lvconvert -m1 --mirrorlog disk $vg/$lv1 $dev1
 check mirror $vg $lv1 $dev1