diff --git a/configure.ac b/configure.ac
index 7722b0a..d180466 100644
--- a/configure.ac
+++ b/configure.ac
@@ -100,7 +100,7 @@ AC_REPLACE_FUNCS([strlcpy])
 AC_REPLACE_FUNCS([strndup])
 AC_REPLACE_FUNCS([clock_gettime])
 
-AC_CHECK_HEADERS([bsd/string.h langinfo.h alloca.h sys/queue.h arpa/inet.h])
+AC_CHECK_HEADERS([bsd/string.h langinfo.h alloca.h sys/queue.h arpa/inet.h sys/socket.h])
 
 ## Configure random device path
 AC_ARG_WITH([urandom], 
diff --git a/src/netbios_ns.c b/src/netbios_ns.c
index 38834c7..f282b56 100644
--- a/src/netbios_ns.c
+++ b/src/netbios_ns.c
@@ -52,7 +52,8 @@
 #ifdef _WIN32
 # include <winsock2.h>
 # include <ws2tcpip.h>
-#else
+#endif
+#ifdef HAVE_SYS_SOCKET_H
 # include <sys/socket.h>
 #endif
 
diff --git a/src/netbios_session.c b/src/netbios_session.c
index f43ded0..b48c256 100644
--- a/src/netbios_session.c
+++ b/src/netbios_session.c
@@ -39,9 +39,9 @@
 #ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
 #endif
-#ifndef _WIN32
+#ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
-#else
+#endif
 
 #include "bdsm_debug.h"
 #include "netbios_session.h"