diff --git a/crates/executor/src/config.rs b/crates/executor/src/config.rs
index b6b5e4d0a226..3f161a30610d 100644
--- a/crates/executor/src/config.rs
+++ b/crates/executor/src/config.rs
@@ -20,8 +20,7 @@ pub fn revm_spec(chain_spec: &ChainSpec, for_block: BlockNumber) -> revm::SpecId
         b if chain_spec.fork_active(Hardfork::Petersburg, b) => revm::PETERSBURG,
         b if chain_spec.fork_active(Hardfork::Byzantium, b) => revm::BYZANTIUM,
         b if chain_spec.fork_active(Hardfork::SpuriousDragon, b) => revm::SPURIOUS_DRAGON,
-        b if chain_spec.fork_active(Hardfork::Eip150, b) => revm::TANGERINE,
-        b if chain_spec.fork_active(Hardfork::Eip158, b) => revm::TANGERINE,
+        b if chain_spec.fork_active(Hardfork::Tangerine, b) => revm::TANGERINE,
         b if chain_spec.fork_active(Hardfork::Homestead, b) => revm::HOMESTEAD,
         b if chain_spec.fork_active(Hardfork::Frontier, b) => revm::FRONTIER,
         _ => panic!("wrong configuration"),
diff --git a/crates/primitives/src/chain_spec.rs b/crates/primitives/src/chain_spec.rs
index ec9f386653ea..bfaa8e0283a5 100644
--- a/crates/primitives/src/chain_spec.rs
+++ b/crates/primitives/src/chain_spec.rs
@@ -18,8 +18,7 @@ pub static MAINNET: Lazy<ChainSpec> = Lazy::new(|| ChainSpec {
         (Hardfork::Frontier, 0),
         (Hardfork::Homestead, 1150000),
         (Hardfork::Dao, 1920000),
-        (Hardfork::Eip150, 2463000),
-        (Hardfork::Eip158, 2463000),
+        (Hardfork::Tangerine, 2463000),
         (Hardfork::SpuriousDragon, 2675000),
         (Hardfork::Byzantium, 4370000),
         (Hardfork::Constantinople, 7280000),
@@ -201,8 +200,7 @@ impl From<EthersGenesis> for ChainSpec {
         let hardfork_opts = vec![
             (Hardfork::Homestead, genesis.config.homestead_block),
             (Hardfork::Dao, genesis.config.dao_fork_block),
-            (Hardfork::Eip150, genesis.config.eip150_block),
-            (Hardfork::Eip158, genesis.config.eip158_block),
+            (Hardfork::Tangerine, genesis.config.eip150_block),
             (Hardfork::SpuriousDragon, genesis.config.eip155_block),
             (Hardfork::Byzantium, genesis.config.byzantium_block),
             (Hardfork::Constantinople, genesis.config.constantinople_block),
@@ -300,8 +298,7 @@ impl ChainSpecBuilder {
     /// Enables Tangerine
     pub fn tangerine_whistle_activated(mut self) -> Self {
         self = self.homestead_activated();
-        self.hardforks.insert(Hardfork::Eip150, 0);
-        self.hardforks.insert(Hardfork::Eip158, 0);
+        self.hardforks.insert(Hardfork::Tangerine, 0);
         self
     }
 
@@ -440,8 +437,7 @@ mod tests {
             .genesis_hash(empty_sealed.hash())
             .with_fork(Hardfork::Frontier, 0)
             .with_fork(Hardfork::Homestead, 0)
-            .with_fork(Hardfork::Eip150, 0)
-            .with_fork(Hardfork::Eip158, 0)
+            .with_fork(Hardfork::Tangerine, 0)
             .with_fork(Hardfork::SpuriousDragon, 0)
             .with_fork(Hardfork::Byzantium, 0)
             .with_fork(Hardfork::Constantinople, 0)
@@ -481,7 +477,7 @@ mod tests {
             .genesis_hash(empty_sealed.hash())
             .with_fork(Hardfork::Frontier, 0)
             .with_fork(Hardfork::Homestead, 1)
-            .with_fork(Hardfork::Eip150, 1)
+            .with_fork(Hardfork::Tangerine, 1)
             .build();
 
         assert_eq!(unique_spec.fork_id(2), duplicate_spec.fork_id(2));
diff --git a/crates/primitives/src/hardfork.rs b/crates/primitives/src/hardfork.rs
index 0537497f8978..42ea1f160eb2 100644
--- a/crates/primitives/src/hardfork.rs
+++ b/crates/primitives/src/hardfork.rs
@@ -12,8 +12,7 @@ pub enum Hardfork {
     Frontier,
     Homestead,
     Dao,
-    Eip150,
-    Eip158,
+    Tangerine,
     SpuriousDragon,
     Byzantium,
     Constantinople,
@@ -86,19 +85,18 @@ impl FromStr for Hardfork {
             "frontier" | "1" => Hardfork::Frontier,
             "homestead" | "2" => Hardfork::Homestead,
             "dao" | "3" => Hardfork::Dao,
-            "eip150" | "4" => Hardfork::Eip150,
-            "eip158" | "5" => Hardfork::Eip158,
-            "spuriousdragon" | "6" => Hardfork::SpuriousDragon,
-            "byzantium" | "7" => Hardfork::Byzantium,
-            "constantinople" | "8" => Hardfork::Constantinople,
-            "petersburg" | "9" => Hardfork::Petersburg,
-            "istanbul" | "10" => Hardfork::Istanbul,
-            "muirglacier" | "11" => Hardfork::Muirglacier,
-            "berlin" | "12" => Hardfork::Berlin,
-            "london" | "13" => Hardfork::London,
-            "arrowglacier" | "14" => Hardfork::ArrowGlacier,
+            "tangerine" | "4" => Hardfork::Tangerine,
+            "spuriousdragon" | "5" => Hardfork::SpuriousDragon,
+            "byzantium" | "6" => Hardfork::Byzantium,
+            "constantinople" | "7" => Hardfork::Constantinople,
+            "petersburg" | "8" => Hardfork::Petersburg,
+            "istanbul" | "9" => Hardfork::Istanbul,
+            "muirglacier" | "10" => Hardfork::Muirglacier,
+            "berlin" | "11" => Hardfork::Berlin,
+            "london" | "12" => Hardfork::London,
+            "arrowglacier" | "13" => Hardfork::ArrowGlacier,
             "grayglacier" => Hardfork::GrayGlacier,
-            "latest" | "15" => Hardfork::Latest,
+            "latest" | "14" => Hardfork::Latest,
             _ => return Err(format!("Unknown hardfork {s}")),
         };
         Ok(hardfork)