diff --git a/index.html b/index.html
index ac6c821..a7a9326 100644
--- a/index.html
+++ b/index.html
@@ -19,7 +19,7 @@ <h2 class="first">1. What Is "Caret"?</h2>
     <p>Let's assume that you have taken notes about PDCA cycle (Plan-Do-Check-Action Cycle).</p>
     <img src="Sample_1_Caret.png" alt="">
     <p>Next, save this file and open it in your default text editor, 'Text'.</p>
-    <img src="Chrome-Text-Extension.png" alt="Chrome-Text('Text') in Extensions">
+    <img src="Chrome_Text-Extension.png" alt="Chrome-Text('Text') in Extensions">
 
     <button class="button01" type="button" 
         onclick="location.href='https://chromewebstore.google.com/detail/caret/fljalecfjciodhpcledpamjachpmelml?hl=en'">