diff --git a/lib/gssapi/mech/gss_mech_switch.c b/lib/gssapi/mech/gss_mech_switch.c
index 5b8d35c3d..10a0aa5b9 100644
--- a/lib/gssapi/mech/gss_mech_switch.c
+++ b/lib/gssapi/mech/gss_mech_switch.c
@@ -221,7 +221,9 @@ _gss_load_mech(void)
 
 	add_builtin(__gss_krb5_initialize());
 	add_builtin(__gss_spnego_initialize());
+#ifdef HEIMDAL_SMALLER
 	add_builtin(__gss_ntlm_initialize());
+#endif
 
 #ifdef HAVE_DLOPEN
 	fp = fopen(_PATH_GSS_MECH, "r");