diff --git a/lib/gssapi/mech/gss_mech_switch.c b/lib/gssapi/mech/gss_mech_switch.c
index ba1cfa1b0..b86697150 100644
--- a/lib/gssapi/mech/gss_mech_switch.c
+++ b/lib/gssapi/mech/gss_mech_switch.c
@@ -349,22 +349,22 @@ _gss_load_mech(void)
 		SYM(verify_mic);
 		SYM(wrap);
 		SYM(unwrap);
-		SYM(display_status);
-		SYM(indicate_mechs);
+		OPTSYM(display_status);
+		OPTSYM(indicate_mechs);
 		SYM(compare_name);
 		SYM(display_name);
 		SYM(import_name);
 		SYM(export_name);
 		SYM(release_name);
-		SYM(inquire_cred);
+		OPTSYM(inquire_cred);
 		SYM(inquire_context);
 		SYM(wrap_size_limit);
-		SYM(add_cred);
-		SYM(inquire_cred_by_mech);
+		OPTSYM(add_cred);
+		OPTSYM(inquire_cred_by_mech);
 		SYM(export_sec_context);
 		SYM(import_sec_context);
-		SYM(inquire_names_for_mech);
-		SYM(inquire_mechs_for_name);
+		OPTSYM(inquire_names_for_mech);
+		OPTSYM(inquire_mechs_for_name);
 		SYM(canonicalize_name);
 		SYM(duplicate_name);
 		OPTSYM(inquire_cred_by_oid);