diff --git a/ethernet_interface.cpp b/ethernet_interface.cpp
index 3fd7835..893cd4c 100644
--- a/ethernet_interface.cpp
+++ b/ethernet_interface.cpp
@@ -214,7 +214,7 @@
         return macAddress;
     }
 
-    strcpy(ifr.ifr_name, interfaceName.c_str());
+    std::strcpy(ifr.ifr_name, interfaceName.c_str());
     if (ioctl(sock, SIOCGIFHWADDR, &ifr) != 0)
     {
         log<level::ERR>("ioctl failed for SIOCGIFHWADDR:",
@@ -222,10 +222,10 @@
         return macAddress;
     }
 
-    snprintf(macAddress, mac_address::size, mac_address::format,
-             ifr.ifr_hwaddr.sa_data[0], ifr.ifr_hwaddr.sa_data[1],
-             ifr.ifr_hwaddr.sa_data[2], ifr.ifr_hwaddr.sa_data[3],
-             ifr.ifr_hwaddr.sa_data[4], ifr.ifr_hwaddr.sa_data[5]);
+    std::snprintf(macAddress, mac_address::size, mac_address::format,
+                  ifr.ifr_hwaddr.sa_data[0], ifr.ifr_hwaddr.sa_data[1],
+                  ifr.ifr_hwaddr.sa_data[2], ifr.ifr_hwaddr.sa_data[3],
+                  ifr.ifr_hwaddr.sa_data[4], ifr.ifr_hwaddr.sa_data[5]);
 
     return macAddress;
 }
diff --git a/routing_table.cpp b/routing_table.cpp
index 6a17037..ff5e3f4 100644
--- a/routing_table.cpp
+++ b/routing_table.cpp
@@ -6,9 +6,6 @@
 #include <linux/rtnetlink.h>
 #include <net/if.h>
 #include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <sys/types.h>
diff --git a/rtnetlink_server.cpp b/rtnetlink_server.cpp
index 2e2436b..ed5f8c9 100644
--- a/rtnetlink_server.cpp
+++ b/rtnetlink_server.cpp
@@ -107,7 +107,7 @@
         goto finish;
     }
 
-    memset(&addr, 0, sizeof(addr));
+    std::memset(&addr, 0, sizeof(addr));
     addr.nl_family = AF_NETLINK;
     addr.nl_groups = RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR;