diff --git a/m4macros/ax_gssapi.m4 b/m4macros/ax_gssapi.m4
index be7de02145..a3c4e5bced 100644
--- a/m4macros/ax_gssapi.m4
+++ b/m4macros/ax_gssapi.m4
@@ -67,5 +67,6 @@ fi
 
 AC_SUBST(GSSAPI_CFLAGS)
 AC_SUBST(GSSAPI_LIBS)
+AM_CONDITIONAL([HAVE_GSSAPI], [test x$GSSAPI_LIBS != "x"])
 
 ])dnl AX_GSS_API