diff --git a/src/eth/storage/postgres_external_rpc/postgres_external_rpc.rs b/src/eth/storage/postgres_external_rpc/postgres_external_rpc.rs
index f402eb6d5..f887c736e 100644
--- a/src/eth/storage/postgres_external_rpc/postgres_external_rpc.rs
+++ b/src/eth/storage/postgres_external_rpc/postgres_external_rpc.rs
@@ -15,6 +15,7 @@ use crate::eth::primitives::ExternalReceipt;
 use crate::eth::primitives::Hash;
 use crate::eth::primitives::Wei;
 use crate::eth::storage::ExternalRpcStorage;
+use crate::ext::not;
 use crate::ext::to_json_value;
 use crate::ext::traced_sleep;
 use crate::ext::SleepReason;
@@ -38,6 +39,10 @@ impl PostgresExternalRpcStorage {
     pub async fn new(config: PostgresExternalRpcStorageConfig) -> anyhow::Result<Self> {
         tracing::info!(?config, "creating postgres external rpc storage");
 
+        if not(config.url.contains('?')) {
+            tracing::warn!(url = config.url, "url isn't identified with '?app=NAME' query parameter");
+        }
+
         let result = PgPoolOptions::new()
             .min_connections(config.connections)
             .max_connections(config.connections)