diff --git a/packages/cli/src/ui/App.tsx b/packages/cli/src/ui/App.tsx
index 6f83e7b6..8dd037a5 100644
--- a/packages/cli/src/ui/App.tsx
+++ b/packages/cli/src/ui/App.tsx
@@ -337,7 +337,7 @@ export const App = ({
           key={staticKey}
           items={[
             <Box flexDirection="column" key="header">
-              <Header title={process.env.CLI_TITLE} />
+              <Header />
               <Tips config={config} />
             </Box>,
             ...history.map((h) => (
diff --git a/packages/cli/src/ui/components/Header.test.tsx b/packages/cli/src/ui/components/Header.test.tsx
deleted file mode 100644
index 0c03e514..00000000
--- a/packages/cli/src/ui/components/Header.test.tsx
+++ /dev/null
@@ -1,48 +0,0 @@
-/**
- * @license
- * Copyright 2025 Google LLC
- * SPDX-License-Identifier: Apache-2.0
- */
-
-import { render } from 'ink-testing-library';
-import { Header } from './Header.js';
-import { vi } from 'vitest';
-
-// Mock ink-gradient and ink-big-text as they might have complex rendering
-vi.mock('ink-gradient', () => ({
-  default: vi.fn(({ children }) => children), // Pass through children
-}));
-
-import { Text } from 'ink'; // Import the actual Text component from Ink
-
-vi.mock('ink-big-text', () => ({
-  default: vi.fn(({ text }) => <Text>{text}</Text>), // Use Ink's Text component
-}));
-
-describe('<Header />', () => {
-  it('should render with the default title "GEMINI" when no title prop is provided', () => {
-    const { lastFrame } = render(<Header />);
-    const output = lastFrame();
-    // Check if the output contains the default text "GEMINI"
-    // The actual output will be simple text due to mocking
-    expect(output).toContain('GEMINI');
-  });
-
-  it('should render with a custom title when the title prop is provided', () => {
-    const customTitle = 'My Custom CLI';
-    const { lastFrame } = render(<Header title={customTitle} />);
-    const output = lastFrame();
-    // Check if the output contains the custom title
-    expect(output).toContain(customTitle);
-  });
-
-  it('should render with an empty title if an empty string is provided', () => {
-    const customTitle = '';
-    const { lastFrame } = render(<Header title={customTitle} />);
-    const output = lastFrame();
-    // Depending on how BigText handles empty strings,
-    // it might render nothing or a specific representation.
-    // For this test, we'll assume it renders the empty string.
-    expect(output).toContain(''); // or check for a specific structure if BigText behaves differently
-  });
-});
diff --git a/packages/cli/src/ui/components/Header.tsx b/packages/cli/src/ui/components/Header.tsx
index 2b971395..1554f987 100644
--- a/packages/cli/src/ui/components/Header.tsx
+++ b/packages/cli/src/ui/components/Header.tsx
@@ -5,24 +5,28 @@
  */
 
 import React from 'react';
-import { Box } from 'ink';
+import { Box, Text } from 'ink';
 import Gradient from 'ink-gradient';
-import BigText from 'ink-big-text';
 import { Colors } from '../colors.js';
 
-interface HeaderProps {
-  title?: string;
-}
+const asciiArtLogo = `
+ ██████╗ ███████╗███╗   ███╗██╗███╗   ██╗██╗
+██╔════╝ ██╔════╝████╗ ████║██║████╗  ██║██║
+██║  ███╗█████╗  ██╔████╔██║██║██╔██╗ ██║██║
+██║   ██║██╔══╝  ██║╚██╔╝██║██║██║╚██╗██║██║
+╚██████╔╝███████╗██║ ╚═╝ ██║██║██║ ╚████║██║
+ ╚═════╝ ╚══════╝╚═╝     ╚═╝╚═╝╚═╝  ╚═══╝╚═╝
+`;
 
-export const Header: React.FC<HeaderProps> = ({ title = 'GEMINI' }) => (
+export const Header: React.FC = () => (
   <>
-    <Box alignItems="flex-start">
+    <Box marginBottom={1} alignItems="flex-start">
       {Colors.GradientColors ? (
         <Gradient colors={Colors.GradientColors}>
-          <BigText text={title} letterSpacing={0} space={false} />
+          <Text>{asciiArtLogo}</Text>
         </Gradient>
       ) : (
-        <BigText text={title} letterSpacing={0} space={false} />
+        <Text>{asciiArtLogo}</Text>
       )}
     </Box>
   </>