diff --git a/spa/plugins/filter-graph/ffmpeg_plugin.c b/spa/plugins/filter-graph/ffmpeg_plugin.c
index fb02e00c9..ee2b81f4b 100644
--- a/spa/plugins/filter-graph/ffmpeg_plugin.c
+++ b/spa/plugins/filter-graph/ffmpeg_plugin.c
@@ -179,7 +179,12 @@ static void ffmpeg_cleanup(void *instance)
 static void ffmpeg_free(const struct spa_fga_descriptor *desc)
 {
 	struct descriptor *d = (struct descriptor*)desc;
+	uint32_t i;
 	avfilter_graph_free(&d->filter_graph);
+	for (i = 0; i <  d->desc.n_ports; i++)
+		free((void*)d->desc.ports[i].name);
+	free((char*)d->desc.name);
+	free(d->desc.ports);
 	free(d);
 }
 
diff --git a/spa/plugins/filter-graph/lv2_plugin.c b/spa/plugins/filter-graph/lv2_plugin.c
index 7628d7650..3928b236c 100644
--- a/spa/plugins/filter-graph/lv2_plugin.c
+++ b/spa/plugins/filter-graph/lv2_plugin.c
@@ -486,6 +486,9 @@ static void lv2_run(void *instance, unsigned long SampleCount)
 static void lv2_free(const struct spa_fga_descriptor *desc)
 {
 	struct descriptor *d = (struct descriptor*)desc;
+	uint32_t i;
+	for (i = 0; i <  d->desc.n_ports; i++)
+		free((void*)d->desc.ports[i].name);
 	free((char*)d->desc.name);
 	free(d->desc.ports);
 	free(d);