diff --git a/crates/primitives/src/signature/ecdsa_sig.rs b/crates/primitives/src/signature/ecdsa_sig.rs
index 6962bf5a6e..06690578a0 100644
--- a/crates/primitives/src/signature/ecdsa_sig.rs
+++ b/crates/primitives/src/signature/ecdsa_sig.rs
@@ -212,8 +212,9 @@ impl Signature for EcdsaSignature {
     /// replay-protected by [EIP-155].
     ///
     /// [EIP-155]: https://eips.ethereum.org/EIPS/eip-155
+    #[inline]
     fn chain_id(&self) -> Option<u64> {
-        self.v.chain_id()
+        self.v().chain_id()
     }
 
     /// Returns true if the signature is replay-protected by [EIP-155].