diff --git a/bins/revme/src/statetest/runner.rs b/bins/revme/src/statetest/runner.rs
index 476ad263..9519a64c 100644
--- a/bins/revme/src/statetest/runner.rs
+++ b/bins/revme/src/statetest/runner.rs
@@ -172,7 +172,7 @@ pub fn execute_test_suite(
         }
 
         let mut env = Env::default();
-        // for mainnet
+        // Ethereum Mainnet chain id, not changed to 706 to remain compatible with ethereum/tests
         env.cfg.chain_id = 1;
         // env.cfg.spec_id is set down the road
 
diff --git a/crates/primitives/src/env.rs b/crates/primitives/src/env.rs
index ec335079..7d899b27 100644
--- a/crates/primitives/src/env.rs
+++ b/crates/primitives/src/env.rs
@@ -350,7 +350,7 @@ pub enum AnalysisKind {
 impl Default for CfgEnv {
     fn default() -> Self {
         Self {
-            chain_id: 1,
+            chain_id: 706, // sum of the ASCII values for "Sablier"
             spec_id: SpecId::LATEST,
             perf_analyse_created_bytecodes: AnalysisKind::default(),
             limit_contract_code_size: None,