diff --git a/test/shell/thin-flags.sh b/test/shell/thin-flags.sh
index 6e5749a74..0b3148a9c 100644
--- a/test/shell/thin-flags.sh
+++ b/test/shell/thin-flags.sh
@@ -98,7 +98,10 @@ not lvcreate -V10 -n $lv3 $vg/pool
 lvs -ao+seg_pe_ranges $vg
 
 # needs_check needs newer version
-if aux have_thin 1 20 0 ; then
+THINMINVER="1 20 0"
+aux kernel_at_least 4.18 && THINMINVER="1 19 0" # kernel >=4.18 already had changes from 1.20
+
+if aux have_thin $THINVER ; then
 	check lv_attr_bit state $vg/pool "a"
 
 	dmsetup suspend $vg-pool-tpool