diff --git a/lib/kadm5/chpass_s.c b/lib/kadm5/chpass_s.c
index dfbc91b00..150b82a3e 100644
--- a/lib/kadm5/chpass_s.c
+++ b/lib/kadm5/chpass_s.c
@@ -302,7 +302,7 @@ struct chpass_principal_with_key_hook_ctx {
     krb5_key_data *key_data;
 };
 
-static krb5_error_code
+static krb5_error_code KRB5_LIB_CALL
 chpass_principal_with_key_hook_cb(krb5_context context,
 				  const void *hook,
 				  void *hookctx,