diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index 2034782067..f841e6e8c1 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -3578,12 +3578,12 @@ LV2PluginInfo::discover()
 				}
 		}
 
+		lilv_nodes_free (required_features);
+
 		if (err) {
 			continue;
 		}
 
-		lilv_nodes_free (required_features);
-
 		LilvNodes* required_options = lilv_world_find_nodes (world.world, lilv_plugin_get_uri (p), world.opts_requiredOptions, NULL);
 		if (required_options) {
 			LILV_FOREACH(nodes, i, required_options) {