diff --git a/packages/infrastructure/config/AutomationConfig.ts b/packages/infrastructure/config/AutomationConfig.ts
index 0200921d0..400277d14 100644
--- a/packages/infrastructure/config/AutomationConfig.ts
+++ b/packages/infrastructure/config/AutomationConfig.ts
@@ -51,7 +51,7 @@ export interface AutomationEnvironmentConfig {
  */
 export function loadAutomationConfig(): AutomationEnvironmentConfig {
   const modeEnv = process.env.AUTOMATION_MODE;
-  const mode: AutomationMode = isValidAutomationMode(modeEnv) ? modeEnv : 'production';
+  const mode: AutomationMode = isValidAutomationMode(modeEnv) ? modeEnv : 'mock';
   
   return {
     mode,
diff --git a/tests/unit/infrastructure/AutomationConfig.test.ts b/tests/unit/infrastructure/AutomationConfig.test.ts
index 5b8f6403b..ac7bcf724 100644
--- a/tests/unit/infrastructure/AutomationConfig.test.ts
+++ b/tests/unit/infrastructure/AutomationConfig.test.ts
@@ -16,12 +16,12 @@ describe('AutomationConfig', () => {
 
   describe('loadAutomationConfig', () => {
     describe('default configuration', () => {
-      it('should return production mode when AUTOMATION_MODE is not set', () => {
+      it('should return mock mode when AUTOMATION_MODE is not set', () => {
         delete process.env.AUTOMATION_MODE;
         
         const config = loadAutomationConfig();
         
-        expect(config.mode).toBe('production');
+        expect(config.mode).toBe('mock');
       });
 
       it('should return default devTools configuration', () => {
@@ -161,12 +161,12 @@ describe('AutomationConfig', () => {
         expect(config.nutJs?.confidence).toBe(0.9);
       });
 
-      it('should fallback to production mode for invalid AUTOMATION_MODE', () => {
+      it('should fallback to mock mode for invalid AUTOMATION_MODE', () => {
         process.env.AUTOMATION_MODE = 'invalid-mode';
         
         const config = loadAutomationConfig();
         
-        expect(config.mode).toBe('production');
+        expect(config.mode).toBe('mock');
       });
     });