diff --git a/tests/integration/test_zksync_web3.py b/tests/integration/test_zksync_web3.py
index e502516..1729414 100644
--- a/tests/integration/test_zksync_web3.py
+++ b/tests/integration/test_zksync_web3.py
@@ -770,7 +770,7 @@ def test_get_all_account_balances(self):
 
     # @skip("Integration test, used for develop purposes only")
     def test_get_l1_chain_id(self):
-        l1_chain_id = self.web3.zksync.zks_l1_chain_id()
+        self.assertIsInstance(self.web3.zksync.zks_l1_chain_id(), int)
 
     # @skip("Integration test, used for develop purposes only")
     def test_get_bridge_addresses(self):
diff --git a/zksync2/module/zksync_module.py b/zksync2/module/zksync_module.py
index 3bb7983..4768396 100644
--- a/zksync2/module/zksync_module.py
+++ b/zksync2/module/zksync_module.py
@@ -525,7 +525,7 @@ def zks_get_token_price(self, token_address: TokenAddress) -> Decimal:
         return self._zks_get_token_price(token_address)
 
     def zks_l1_chain_id(self) -> int:
-        return self._zks_l1_chain_id()
+        return int(self._zks_l1_chain_id(), 16)
 
     def zks_get_balance(
         self,