diff --git a/src/blockchain/web3_extentions/middleware.py b/src/blockchain/web3_extentions/middleware.py
index 3ab76f9..9c78179 100644
--- a/src/blockchain/web3_extentions/middleware.py
+++ b/src/blockchain/web3_extentions/middleware.py
@@ -19,10 +19,10 @@ def add_requests_metric_middleware(web3: Web3) -> Web3:
     ETH_RPC_REQUESTS - Counter with requests count, response codes and request domain.
     """
     chain_id = web3.eth.chain_id
+    metric = ETH_RPC_REQUESTS if chain_id == 1 else ONCHAIN_TRANSPORT_ETH_RPC_REQUESTS
 
     def metrics_collector(make_request: Callable[[RPCEndpoint, Any], RPCResponse], w3: Web3) -> Callable[[RPCEndpoint, Any], RPCResponse]:
         """Constructs a middleware which measure requests parameters"""
-        metric = ETH_RPC_REQUESTS if chain_id == 1 else ONCHAIN_TRANSPORT_ETH_RPC_REQUESTS
 
         def middleware(method: RPCEndpoint, params: Any) -> RPCResponse:
             try: