diff --git a/src/modules/module-filter-chain.c b/src/modules/module-filter-chain.c
index 7002e36ab..e934b2206 100644
--- a/src/modules/module-filter-chain.c
+++ b/src/modules/module-filter-chain.c
@@ -1962,6 +1962,7 @@ static void impl_destroy(struct impl *impl)
 
 	pw_properties_free(impl->capture_props);
 	pw_properties_free(impl->playback_props);
+	pw_properties_free(impl->control_props);
 
 	pw_properties_free(impl->props);
 	free(impl);