diff --git a/src/rln.ts b/src/rln.ts
index 6280b9e..373f881 100644
--- a/src/rln.ts
+++ b/src/rln.ts
@@ -381,7 +381,7 @@ export class RLNInstance {
     }
 
     const chainId = credentials.membership.chainId;
-    const network = await this._contract.registry.getNetwork();
+    const network = await this._contract.registry.provider.getNetwork();
     const currentChainId = network.chainId;
     if (chainId !== currentChainId) {
       throw Error(