diff --git a/configure.ac b/configure.ac
index b14c30f..c5f167c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -176,7 +176,7 @@ AC_SEARCH_LIBS([socket], [socket])
 AC_SEARCH_LIBS([inet_addr], [nsl])
 
 # Checks for header files.
-AC_CHECK_HEADERS([arpa/inet.h fcntl.h langinfo.h limits.h locale.h netinet/in.h netinet/ip.h stddef.h stdint.h inttypes.h stdlib.h string.h sys/ioctl.h sys/resource.h sys/socket.h sys/stat.h sys/time.h termios.h unistd.h wchar.h wctype.h], [], [AC_MSG_ERROR([Missing required header file.])])
+AC_CHECK_HEADERS([arpa/inet.h fcntl.h langinfo.h limits.h locale.h netinet/in.h stddef.h stdint.h inttypes.h stdlib.h string.h sys/ioctl.h sys/resource.h sys/socket.h sys/stat.h sys/time.h termios.h unistd.h wchar.h wctype.h], [], [AC_MSG_ERROR([Missing required header file.])])
 
 AC_CHECK_HEADERS([pty.h util.h libutil.h paths.h])
 AC_CHECK_HEADERS([endian.h sys/endian.h])
diff --git a/src/network/network.cc b/src/network/network.cc
index 7ef9e4b..d4ce857 100644
--- a/src/network/network.cc
+++ b/src/network/network.cc
@@ -34,6 +34,7 @@
 
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <netinet/in.h>
 #include <netinet/ip.h>
 #include <arpa/inet.h>
 #include <assert.h>