diff --git a/tests/zfs-tests/tests/functional/history/history.cfg b/tests/zfs-tests/tests/functional/history/history.cfg
index a508a7935684..6020443bcdb0 100644
--- a/tests/zfs-tests/tests/functional/history/history.cfg
+++ b/tests/zfs-tests/tests/functional/history/history.cfg
@@ -37,11 +37,7 @@ export TMP_HISTORY=$TEST_BASE_DIR/tmp_history.$$
 export NEW_HISTORY=$TEST_BASE_DIR/new_history.$$
 
 export MIGRATEDPOOLNAME=${MIGRATEDPOOLNAME:-history_pool}
-if is_freebsd; then
-	export TIMEZONE=${TIMEZONE:-America/Denver}
-else
-	export TIMEZONE=${TIMEZONE:-US/Mountain}
-fi
+export TIMEZONE=${TIMEZONE:-America/Denver}
 
 export HIST_USER="huser"
 export HIST_GROUP="hgroup"