diff --git a/search/binary_search.cpp b/search/binary_search.cpp
index ebe488e5658..9ae2634dc6d 100644
--- a/search/binary_search.cpp
+++ b/search/binary_search.cpp
@@ -59,6 +59,7 @@ namespace binary_search {
  * @returns @param int index of val in vector arr
  *******************************************************************************/
 uint64_t binarySearch(std::vector<uint64_t> arr, uint64_t val) {
+    if (arr.size() <= 1) return arr[0];
     uint64_t low = 0;                // set the lowest point of the vector.
     uint64_t high = arr.size() - 1;  // set the highest point of the vector.