diff --git a/lib/serialize/blocks.js b/lib/serialize/blocks.js
index 23934eb6..4ea9fe97 100644
--- a/lib/serialize/blocks.js
+++ b/lib/serialize/blocks.js
@@ -650,7 +650,8 @@ module.exports = {
 				// Rename injection node
 				renameInjectionVarNode();
 			} else if (!containsEval || paramName === 'super') {
-				// NB: `super` var is always renamed
+				// Param can be renamed.
+				// NB: `super` param is always renamed.
 				newName = transformVarName(paramName, containsEval);
 				if (newName !== paramName) {
 					// Rename all nodes