diff --git a/BinarySearch/BinarySearch_test.go b/BinarySearch/BinarySearch_test.go
index 2327b2e..5ba7a32 100644
--- a/BinarySearch/BinarySearch_test.go
+++ b/BinarySearch/BinarySearch_test.go
@@ -10,7 +10,7 @@ func SortArray(array []int) {
 	for itemIndex, itemValue := range array {
 		for itemIndex != 0 && array[itemIndex-1] > itemValue {
 			array[itemIndex] = array[itemIndex-1]
-			itemIndex -= 1
+			itemIndex --
 		}
 		array[itemIndex] = itemValue
 	}