diff --git a/ngrep.c b/ngrep.c
index 3df9389..b2fcceb 100644
--- a/ngrep.c
+++ b/ngrep.c
@@ -98,6 +98,7 @@
 #endif
 
 #include "ngrep.h"
+#include "tcpkill.h"
 
 
 /*
diff --git a/tcpkill.c b/tcpkill.c
index 5388ec5..ac8fd2e 100644
--- a/tcpkill.c
+++ b/tcpkill.c
@@ -14,6 +14,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
+#include <err.h>
 #include <libnet.h>
 #include <pcap.h>