diff --git a/lib/cli/index.js b/lib/cli/index.js
index 2402fa2a2..c3f316244 100644
--- a/lib/cli/index.js
+++ b/lib/cli/index.js
@@ -40,7 +40,7 @@ exports.run = () => {
         console.log('    Examples:');
         console.log('      gemini test --system-debug true');
         console.log('      gemini update --root-url http://example.com');
-        console.log('      gemini test --browsers-ie8-window-size 1024x768');
+        console.log('      gemini test --browsers-ie-8-window-size 1024x768');
         console.log('');
         console.log('    You can also use environment variables converted to snake_case with');
         console.log('    gemini_ prefix');