diff --git a/replace-string/action.yml b/replace-string/action.yml
index 17658e6..52b88a9 100644
--- a/replace-string/action.yml
+++ b/replace-string/action.yml
@@ -1,7 +1,9 @@
 ---
 name: Replace string
 description: |
-  Replaces string...
+  This action replaces a specified string using regular expression.
+  It can be passed as an input or read from a file.
+  Also, the output string can be additional written to file.
 inputs:
   string:
     description: String to be replaced
diff --git a/replace-string/index.js b/replace-string/index.js
index 38bbcbd..a5eb1bd 100644
--- a/replace-string/index.js
+++ b/replace-string/index.js
@@ -34,7 +34,7 @@ try {
   }
 
   const regex = new RegExp(inReplaceRegex, inFlags);
-  strReplaced = string.replace(regex, inReplaceWith);
+  strReplaced = strToReplace.replace(regex, inReplaceWith);
 
 
   // Output