--- a/devtools/client/webconsole/test/mochitest/browser.ini
+++ b/devtools/client/webconsole/test/mochitest/browser.ini
@@ -260,16 +260,17 @@ subsuite = clipboard
 [browser_webconsole_context_menu_open_url.js]
 [browser_webconsole_context_menu_store_as_global.js]
 [browser_webconsole_csp_ignore_reflected_xss_message.js]
 skip-if = (e10s && debug) || (e10s && os == 'win') # Bug 1221499 enabled these on windows
 [browser_webconsole_csp_violation.js]
 [browser_webconsole_cspro.js]
 [browser_webconsole_document_focus.js]
 [browser_webconsole_duplicate_errors.js]
+[browser_webconsole_error_with_unicode.js]
 [browser_webconsole_errors_after_page_reload.js]
 [browser_webconsole_eval_in_debugger_stackframe.js]
 [browser_webconsole_eval_in_debugger_stackframe2.js]
 [browser_webconsole_execution_scope.js]
 [browser_webconsole_external_script_errors.js]
 [browser_webconsole_file_uri.js]
 skip-if = true #	Bug 1404382
 [browser_webconsole_filter_by_input.js]

new file mode 100644
--- /dev/null
+++ b/devtools/client/webconsole/test/mochitest/browser_webconsole_error_with_unicode.js
@@ -0,0 +1,24 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Check if an error with Unicode characters is reported correctly.
+
+"use strict";
+
+const TEST_URI = "data:text/html;charset=utf8,<script>\u6e2c</script>";
+const EXPECTED_REPORT = "ReferenceError: \u6e2c is not defined";
+
+add_task(async function() {
+  let hud = await openNewTabAndConsole(TEST_URI);
+
+  // On e10s, the exception is triggered in child process
+  // and is ignored by test harness
+  if (!Services.appinfo.browserTabsRemoteAutostart) {
+    expectUncaughtException();
+  }
+
+  info("generate exception and wait for the message");
+
+  let msg = await waitFor(() => findMessage(hud, EXPECTED_REPORT));
+  ok(msg, `Message found: "${EXPECTED_REPORT}"`);
+});