diff --git a/src.ts/providers/provider-jsonrpc.ts b/src.ts/providers/provider-jsonrpc.ts
index 19d244d48b..7aca1145ba 100644
--- a/src.ts/providers/provider-jsonrpc.ts
+++ b/src.ts/providers/provider-jsonrpc.ts
@@ -194,6 +194,7 @@ export class JsonRpcSigner extends AbstractSigner<JsonRpcApiProvider> {
 
     constructor(provider: JsonRpcApiProvider, address: string) {
         super(provider);
+        address = getAddress(address);
         defineProperties<JsonRpcSigner>(this, { address });
     }
 
@@ -932,8 +933,8 @@ export abstract class JsonRpcApiProvider extends AbstractProvider {
         // Account address
         address = getAddress(address);
         for (const account of accounts) {
-            if (getAddress(account) === account) {
-                return new JsonRpcSigner(this, account);
+            if (getAddress(account) === address) {
+                return new JsonRpcSigner(this, address);
             }
         }