diff --git a/configure b/configure
index c4445b9e7..88c0a4457 100755
--- a/configure
+++ b/configure
@@ -3735,7 +3735,8 @@ done
 
 
 
-for ac_header in pwd.h termios.h
+
+for ac_header in pwd.h termios.h sys/sockio.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
diff --git a/configure.ac b/configure.ac
index 1d396da42..f9d7bc940 100644
--- a/configure.ac
+++ b/configure.ac
@@ -166,7 +166,7 @@ esac
 AC_SUBST(LUAFLAGS)
 
 dnl Checks for header files.
-AC_CHECK_HEADERS(pwd.h termios.h)
+AC_CHECK_HEADERS(pwd.h termios.h sys/sockio.h)
 
 dnl If any socket libraries needed
 AC_SEARCH_LIBS(setsockopt, socket)
diff --git a/tcpip.cc b/tcpip.cc
index 2182883c4..a8e568d25 100644
--- a/tcpip.cc
+++ b/tcpip.cc
@@ -117,6 +117,10 @@
 #include <sys/resource.h>
 #endif
 
+#if HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
+
 #if HAVE_UNISTD_H
 /* #include <sys/unistd.h> */
 #include <unistd.h>