1 files changed, 1 insertions, 1 deletions

diff --git a/src/firemon/interface.c b/src/firemon/interface.c
index 71026c7b7..3e0f10d0b 100644
--- a/src/firemon/interface.c
+++ b/src/firemon/interface.c
@@ -62,7 +62,7 @@ static void net_ifprint(void) {
                                         // extract mac address
                                         struct ifreq ifr;
                                         memset(&ifr, 0, sizeof(ifr));
-                                        strncpy(ifr.ifr_name,  ifa->ifa_name, IFNAMSIZ);
+                                        strncpy(ifr.ifr_name,  ifa->ifa_name, IFNAMSIZ - 1);
                                         int rv = ioctl (fd, SIOCGIFHWADDR, &ifr);
 
                                         if (rv == 0)