1 files changed, 3 insertions, 1 deletions
diff --git a/src/fmod.c b/src/fmod.c
index e57de5f..80f7681 100644
--- a/src/fmod.c
+++ b/src/fmod.c
@@ -87,6 +87,7 @@ morph_port(LV2_Handle                      instance,
 		return LV2_MORPH_ERR_BAD_PORT;
 	}
 
+	plugin->output_is_cv = plugin->frequency_is_cv || plugin->modulator_is_cv;
 	return LV2_MORPH_SUCCESS;
 }
 
@@ -98,7 +99,7 @@ port_type(LV2_Handle                instance,
 	Fmod* plugin = (Fmod*)instance;
 
 	switch (port) {
-	case FMOD_FREQUENCY:
+	case FMOD_OUTPUT:
 		return (plugin->output_is_cv
 		        ? plugin->uris.lv2_CVPort
 		        : plugin->uris.lv2_ControlPort);
@@ -118,6 +119,7 @@ instantiate(const LV2_Descriptor*     descriptor,
 	if (plugin) {
 		plugin->frequency_is_cv = 0;
 		plugin->modulator_is_cv = 0;
+		plugin->output_is_cv    = 0;
 		map_uris(&plugin->uris, features);
 	}