diff --git a/.internal/baseSum.js b/.internal/baseSum.js
index 8f8cefb87..dbb6f614e 100644
--- a/.internal/baseSum.js
+++ b/.internal/baseSum.js
@@ -9,7 +9,7 @@
 function baseSum(array, iteratee) {
   let result
 
-  for (value of array) {
+  for (const value of array) {
     const current = iteratee(value)
     if (current !== undefined) {
       result = result === undefined ? current : (result + current)