diff --git a/libs/gst/helpers/gst-ptp-helper.c b/libs/gst/helpers/gst-ptp-helper.c
index fdae3ba869..45a0206862 100644
--- a/libs/gst/helpers/gst-ptp-helper.c
+++ b/libs/gst/helpers/gst-ptp-helper.c
@@ -253,16 +253,16 @@ setup_sockets (void)
       probed_ifaces = g_new0 (gchar *, ifc.ifc_len + 1);
 
       for (i = 0; i < ifc.ifc_len / sizeof (struct ifreq); i++) {
-        strcpy (ifr.ifr_name, ifc.ifc_req[i].ifr_name);
+        strncpy (ifr.ifr_name, ifc.ifc_req[i].ifr_name, IFNAMSIZ);
         if (ioctl (g_socket_get_fd (socket_event), SIOCGIFFLAGS, &ifr) == 0) {
           if ((ifr.ifr_flags & IFF_LOOPBACK))
             continue;
-          probed_ifaces[idx] = g_strdup (ifc.ifc_req[i].ifr_name);
+          probed_ifaces[idx] = g_strndup (ifc.ifc_req[i].ifr_name, IFNAMSIZ);
           idx++;
         } else {
           g_warning ("can't get flags of interface '%s'",
               ifc.ifc_req[i].ifr_name);
-          probed_ifaces[idx] = g_strdup (ifc.ifc_req[i].ifr_name);
+          probed_ifaces[idx] = g_strndup (ifc.ifc_req[i].ifr_name, IFNAMSIZ);
           idx++;
         }
         if (idx != 0)
@@ -305,7 +305,7 @@ setup_sockets (void)
       gchar **ptr = ifaces;
 
       while (*ptr) {
-        strcpy (ifr.ifr_name, *ptr);
+        strncpy (ifr.ifr_name, *ptr, IFNAMSIZ);
         if (ioctl (g_socket_get_fd (socket_event), SIOCGIFHWADDR, &ifr) == 0) {
           clock_id_array[0] = ifr.ifr_hwaddr.sa_data[0];
           clock_id_array[1] = ifr.ifr_hwaddr.sa_data[1];
@@ -331,7 +331,7 @@ setup_sockets (void)
         guint i;
 
         for (i = 0; i < ifc.ifc_len / sizeof (struct ifreq); i++) {
-          strcpy (ifr.ifr_name, ifc.ifc_req[i].ifr_name);
+          strncpy (ifr.ifr_name, ifc.ifc_req[i].ifr_name, IFNAMSIZ);
           if (ioctl (g_socket_get_fd (socket_event), SIOCGIFFLAGS, &ifr) == 0) {
             if ((ifr.ifr_flags & IFF_LOOPBACK))
               continue;