diff --git a/tests/regression_test.go b/tests/regression_test.go
index 82a474a0..300fa64d 100644
--- a/tests/regression_test.go
+++ b/tests/regression_test.go
@@ -2361,7 +2361,7 @@ func testcases2021() []testcase {
 				Part1: "",
 				Part2: "",
 			},
-			wantErr: true,
+			wantErr: false,
 		},
 		{
 			name: "2021/day09",