diff --git a/src/entities/chain/model.ts b/src/entities/chain/model.ts
index b6a7808..c1360f7 100644
--- a/src/entities/chain/model.ts
+++ b/src/entities/chain/model.ts
@@ -33,8 +33,8 @@ export const useChainState = create<ChainState>((set, get) => ({
       const chains = state.chains;
       if (!chains) return { chains: [chain] };
       const chainIndex = chains.findIndex((value) => value._id === chain._id);
+      if (chainIndex === -1) return { chains: [...chains, chain] };
 
-      if (!chainIndex) return { chains: [...chains, chain] };
       return {
         chains: [
           ...chains.slice(0, chainIndex),