diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 2bddd9f..b88703c 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -3993,7 +3993,9 @@
 	PyModule_AddIntConstant(m, "NETLINK_FIREWALL", NETLINK_FIREWALL);
 	PyModule_AddIntConstant(m, "NETLINK_TCPDIAG", NETLINK_TCPDIAG);
 	PyModule_AddIntConstant(m, "NETLINK_NFLOG", NETLINK_NFLOG);
+#ifdef NETLINK_XFRM
 	PyModule_AddIntConstant(m, "NETLINK_XFRM", NETLINK_XFRM);
+#endif
 	PyModule_AddIntConstant(m, "NETLINK_ARPD", NETLINK_ARPD);
 	PyModule_AddIntConstant(m, "NETLINK_ROUTE6", NETLINK_ROUTE6);
 	PyModule_AddIntConstant(m, "NETLINK_IP6_FW", NETLINK_IP6_FW);
diff --git a/Modules/socketmodule.h b/Modules/socketmodule.h
index 0c5bfad..ae38c86 100644
--- a/Modules/socketmodule.h
+++ b/Modules/socketmodule.h
@@ -33,6 +33,9 @@
 #endif
 
 #ifdef HAVE_LINUX_NETLINK_H
+# ifdef HAVE_ASM_TYPES_H
+#  include <asm/types.h>
+# endif
 # include <linux/netlink.h>
 #else
 #  undef AF_NETLINK