diff --git a/guide/english/certifications/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sum-all-odd-fibonacci-numbers/index.md b/guide/english/certifications/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sum-all-odd-fibonacci-numbers/index.md
index 1e57c13bd1..4463b97236 100644
--- a/guide/english/certifications/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sum-all-odd-fibonacci-numbers/index.md
+++ b/guide/english/certifications/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sum-all-odd-fibonacci-numbers/index.md
@@ -89,7 +89,8 @@ As you get the next odd one, don't forget to add it to a global variable that ca
         }
 
         // Sum only the odd numbers and return the value
-        return arrFib.reduce((acc, curr) => {
+        // First, reverse the array to avoid starting acc with the first/greater number when it's even
+        return arrFib.reverse().reduce((acc, curr) => {
             return acc + curr * (curr % 2);
         });
     }