diff --git a/src/tools/msvc/Solution.pm b/src/tools/msvc/Solution.pm
index 37c0a99e18..ef10cda576 100644
--- a/src/tools/msvc/Solution.pm
+++ b/src/tools/msvc/Solution.pm
@@ -262,6 +262,8 @@ sub GenerateFiles
 		HAVE_GETOPT_LONG                            => undef,
 		HAVE_GETPEEREID                             => undef,
 		HAVE_GETPEERUCRED                           => undef,
+		HAVE_GSSAPI_EXT_H                           => undef,
+		HAVE_GSSAPI_GSSAPI_EXT_H                    => undef,
 		HAVE_GSSAPI_GSSAPI_H                        => undef,
 		HAVE_GSSAPI_H                               => undef,
 		HAVE_HMAC_CTX_FREE                          => undef,