diff --git a/src/cron/expression/expression_parse_test.v b/src/cron/expression/expression_parse_test.v
index f8eee62..92e8291 100644
--- a/src/cron/expression/expression_parse_test.v
+++ b/src/cron/expression/expression_parse_test.v
@@ -34,7 +34,7 @@ fn test_range_number_invalid() ! {
 }
 
 fn test_range_step_star_1() ! {
-	bf := parse_range('*/4', 0, 20)?
+	bf := parse_range('*/4', 0, 20)!
 
 	assert bf_to_ints(bf, 0) == [0, 4, 8, 12, 16, 20]
 }
@@ -74,7 +74,7 @@ fn test_range_dash() ! {
 }
 
 fn test_range_dash_step() ! {
-	bf := parse_range('4-8/2', 0, 9)?
+	bf := parse_range('4-8/2', 0, 9)!
 
 	assert bf_to_ints(bf, 0) == [4, 6, 8]
 }