diff --git a/05_sumAll/solution/sumAll-solution.js b/05_sumAll/solution/sumAll-solution.js
index c4b38e3..08daf58 100644
--- a/05_sumAll/solution/sumAll-solution.js
+++ b/05_sumAll/solution/sumAll-solution.js
@@ -4,7 +4,7 @@ const sumAll = function (min, max) {
   if (min > max) [min, max] = [max, min];
 
   let sum = 0;
-  for (let i = min; i < max + 1; i++) {
+  for (let i = min; i <= max; i++) {
     sum += i;
   }
   return sum;