diff --git a/src/tool/subcommands/api_cmd/stateful_tests.rs b/src/tool/subcommands/api_cmd/stateful_tests.rs
index e1af970925e4..5f580f3227f6 100644
--- a/src/tool/subcommands/api_cmd/stateful_tests.rs
+++ b/src/tool/subcommands/api_cmd/stateful_tests.rs
@@ -145,7 +145,10 @@ pub(super) async fn run_tests(
             Err(e) => {
                 if let Some(expected_msg) = test.should_fail_with {
                     let err_str = format!("{e:#}");
-                    if err_str.contains(expected_msg) {
+                    if err_str
+                        .to_lowercase()
+                        .contains(&expected_msg.to_lowercase())
+                    {
                         println!("ok");
                         passed += 1;
                     } else {
@@ -624,8 +627,7 @@ pub(super) async fn create_tests(tx: TestTransaction) -> Vec<RpcTestScenario> {
         with_methods!(
             create_eth_new_filter_limit_test(LOTUS_EVENTS_MAXFILTERS + 1)
                 .name("eth_newFilter over limit")
-                .should_fail_with("maximum number of filters registered")
-                .ignore("https://github.com/ChainSafe/forest/issues/5915"),
+                .should_fail_with("maximum number of filters registered"),
             EthNewFilter,
             EthUninstallFilter
         ),