diff --git a/units/tests/str.rs b/units/tests/str.rs
index 0b365af20..767ed6a9f 100644
--- a/units/tests/str.rs
+++ b/units/tests/str.rs
@@ -37,11 +37,11 @@ check! {
     fee_rate_max, FeeRate, FeeRate::MAX, "18446744073709551615";
     fee_rate_dust, FeeRate, FeeRate::DUST, "750";
 
-    lock_time_absolute_min, absolute::Height, absolute::Height::MIN, "0";
-    lock_time_absolute_max, absolute::Height, absolute::Height::MAX, "499999999";
+    lock_by_height_absolute_min, absolute::Height, absolute::Height::MIN, "0";
+    lock_by_height_absolute_max, absolute::Height, absolute::Height::MAX, "499999999";
 
-    lock_time_relative_min, relative::Height, relative::Height::MIN, "0";
-    lock_time_relative_max, relative::Height, relative::Height::MAX, "65535";
+    lock_by_height_relative_min, relative::Height, relative::Height::MIN, "0";
+    lock_by_height_relative_max, relative::Height, relative::Height::MAX, "65535";
 
     weight_min, Weight, Weight::MIN, "0";
     weight_max, Weight, Weight::MAX, "18446744073709551615";