diff --git a/sorting/selection_sort.cpp b/sorting/selection_sort.cpp
index 671723eda..a975c5d88 100644
--- a/sorting/selection_sort.cpp
+++ b/sorting/selection_sort.cpp
@@ -45,7 +45,7 @@ namespace sorting {
  *******************************************************************************/
 
 void selectionSort(
-    std::array<int, 8>& arr,
+    std::array<int, 8> &arr,
     int len) {  // Array size is const, can be modified by replacing "8" at (Ln
                 // 45, Col 21) & (Ln 45, Col 60).
     for (auto it = 0; it < len; ++it) {
@@ -123,4 +123,4 @@ static void test() {
 int main() {
     test();  // run self-test implementations
     return 0;
-}
\ No newline at end of file
+}