diff --git a/src/McpContext.ts b/src/McpContext.ts
index 70f401c2..29170568 100644
--- a/src/McpContext.ts
+++ b/src/McpContext.ts
@@ -103,7 +103,13 @@ export class McpContext implements Context {
           collect(event);
         },
         pageerror: event => {
-          collect(event);
+          if (event instanceof Error) {
+            collect(event);
+          } else {
+            const error = new Error(`${event}`);
+            error.stack = undefined;
+            collect(error);
+          }
         },
       } as ListenerMap;
     });
diff --git a/tests/tools/console.test.ts b/tests/tools/console.test.ts
index c67b1084..e94713e0 100644
--- a/tests/tools/console.test.ts
+++ b/tests/tools/console.test.ts
@@ -35,6 +35,19 @@ describe('console', () => {
         );
       });
     });
+
+    it('work with primitive unhandled errors', async () => {
+      await withBrowser(async (response, context) => {
+        const page = await context.newPage();
+        await page.setContent('<script>throw undefined;</script>');
+        await listConsoleMessages.handler({params: {}}, response, context);
+        const formattedResponse = await response.handle('test', context);
+        const textContent = formattedResponse[0] as {text: string};
+        assert.ok(
+          textContent.text.includes('msgid=1 [error] undefined (0 args)'),
+        );
+      });
+    });
   });
 
   describe('get_console_message', () => {