diff --git a/lib/gssapi/test_context.c b/lib/gssapi/test_context.c
index 741ef1e19..4dd52d2ec 100644
--- a/lib/gssapi/test_context.c
+++ b/lib/gssapi/test_context.c
@@ -37,6 +37,7 @@
 #include <gssapi.h>
 #include <gssapi_krb5.h>
 #include <gssapi_spnego.h>
+#include <gssapi_ntlm.h>
 #include "test_common.h"
 
 RCSID("$Id$");