1 files changed, 1 insertions, 1 deletions
diff --git a/lilv/lilv.h b/lilv/lilv.h
index 52e3576..9d50def 100644
--- a/lilv/lilv.h
+++ b/lilv/lilv.h
@@ -946,7 +946,7 @@ lilv_plugin_get_port_by_symbol(const LilvPlugin* plugin,
    ports for a particular designation.
 */
 LILV_API
-LilvPort*
+const LilvPort*
 lilv_plugin_get_port_by_designation(const LilvPlugin* plugin,
                                     const LilvNode*   port_class,
                                     const LilvNode*   designation);