diff --git a/lib/rules/prefer-template.js b/lib/rules/prefer-template.js
index fbd9b5ca339..787a11dfdc7 100644
--- a/lib/rules/prefer-template.js
+++ b/lib/rules/prefer-template.js
@@ -203,7 +203,10 @@ module.exports = {
 
             if (isConcatenation(currentNode) && !hasIdentifierReference(currentNode)) {
 
-                // As there are no varibales used in this concatenation, we can sipmly calculate the concatenated string
+                /*
+                 * As there are no varibales used in this concatenation, we can sipmly calculate the concatenated string
+                 * "'Hello ' + 'world'" -> ["'Hello ' " , " 'world'"] -> ["Hello ", "world"] -> "Hello world"
+                 */
                 const concatenatedText = sourceCode.getText(currentNode).split("+").map(e => e.trim().slice(1, -1)).join("");
 
                 return `\`${concatenatedText}\``;