diff --git a/data_structures/skip_list.cpp b/data_structures/skip_list.cpp
index c41d3c2e1..5881f5d27 100644
--- a/data_structures/skip_list.cpp
+++ b/data_structures/skip_list.cpp
@@ -7,8 +7,7 @@
 
 #include <iostream>
 #include <vector>
-#include <string.h>
-#include <stdlib.h>
+#include <cstring>
 #include <ctime>   
 
 // using namespace std;