diff --git a/examples/angular/src/app/components/content/content.component.ts b/examples/angular/src/app/components/content/content.component.ts
index 631c027da..31b010090 100644
--- a/examples/angular/src/app/components/content/content.component.ts
+++ b/examples/angular/src/app/components/content/content.component.ts
@@ -237,7 +237,7 @@ export class ContentComponent implements OnInit, OnDestroy {
   async onSignMessage() {
     const wallet = await this.selector.wallet();
     const message = "test message to sign";
-    const nonce = Buffer.from(Array.from(Array(32).keys()));
+    const nonce = Buffer.from(crypto.getRandomValues(new Uint8Array(32)));
     const recipient = "guest-book.testnet";
 
     if (wallet.type === "browser") {
diff --git a/examples/react/components/Content.tsx b/examples/react/components/Content.tsx
index 68d60c6c6..271442fa9 100644
--- a/examples/react/components/Content.tsx
+++ b/examples/react/components/Content.tsx
@@ -338,7 +338,7 @@ const Content: React.FC = () => {
     const wallet = await selector.wallet();
 
     const message = "test message to sign";
-    const nonce = Buffer.from(Array.from(Array(32).keys()));
+    const nonce = Buffer.from(crypto.getRandomValues(new Uint8Array(32)));
     const recipient = "guest-book.testnet";
 
     if (wallet.type === "browser") {
diff --git a/packages/my-near-wallet/src/lib/my-near-wallet.spec.ts b/packages/my-near-wallet/src/lib/my-near-wallet.spec.ts
index 94b32b37b..9c84817b6 100644
--- a/packages/my-near-wallet/src/lib/my-near-wallet.spec.ts
+++ b/packages/my-near-wallet/src/lib/my-near-wallet.spec.ts
@@ -152,10 +152,13 @@ describe("signMessage", () => {
 
     const result = await wallet.signMessage!(attributes);
 
+    const nonceBase64 = attributes.nonce.toString("base64");
+    const urlParams = `https://testnet.mynearwallet.com/sign-message?message=test+message&nonce=${encodeURIComponent(
+      nonceBase64
+    )}&recipient=test.app&callbackUrl=https%3A%2F%2Ftest.app`;
+
     expect(result).toBe(undefined);
-    expect(window.location.replace).toHaveBeenCalledWith(
-      "https://testnet.mynearwallet.com/sign-message?message=test+message&nonce=30990309-30990309-390A303-292090&recipient=test.app&callbackUrl=https%3A%2F%2Ftest.app"
-    );
+    expect(window.location.replace).toHaveBeenCalledWith(urlParams);
 
     window.location.replace = replace;
   });
diff --git a/packages/my-near-wallet/src/lib/my-near-wallet.ts b/packages/my-near-wallet/src/lib/my-near-wallet.ts
index 0d3b3beb8..5a3721567 100644
--- a/packages/my-near-wallet/src/lib/my-near-wallet.ts
+++ b/packages/my-near-wallet/src/lib/my-near-wallet.ts
@@ -181,7 +181,7 @@ const MyNearWallet: WalletBehaviourFactory<
       const href = new URL(params.walletUrl);
       href.pathname = "sign-message";
       href.searchParams.append("message", message);
-      href.searchParams.append("nonce", nonce.toString());
+      href.searchParams.append("nonce", nonce.toString("base64"));
       href.searchParams.append("recipient", recipient);
       href.searchParams.append("callbackUrl", url);
       if (state) {