diff --git a/modules/module-pipewire/audio-softdsp-endpoint/adapter.c b/modules/module-pipewire/audio-softdsp-endpoint/adapter.c
index 06162a1e..bb8a3d09 100644
--- a/modules/module-pipewire/audio-softdsp-endpoint/adapter.c
+++ b/modules/module-pipewire/audio-softdsp-endpoint/adapter.c
@@ -49,6 +49,7 @@ on_proxy_enum_format_done (WpProxy *proxy, GAsyncResult *res,
   uint8_t buf[1024];
   struct spa_pod_builder pod_builder = SPA_POD_BUILDER_INIT(buf, sizeof(buf));
   struct spa_pod *param;
+  gboolean control;
 
   formats = wp_proxy_enum_params_collect_finish (proxy, res, &error);
   if (error) {
@@ -90,17 +91,22 @@ on_proxy_enum_format_done (WpProxy *proxy, GAsyncResult *res,
   self->format.format = SPA_AUDIO_FORMAT_F32P;
   self->format.rate = 48000;
 
+  /* Only enable control port for input streams */
+  control = direction == PW_DIRECTION_INPUT;
+
   if (self->convert) {
     param = spa_pod_builder_add_object(&pod_builder,
         SPA_TYPE_OBJECT_ParamPortConfig,  SPA_PARAM_PortConfig,
         SPA_PARAM_PORT_CONFIG_direction,  SPA_POD_Id(direction),
-        SPA_PARAM_PORT_CONFIG_mode,       SPA_POD_Id(SPA_PARAM_PORT_CONFIG_MODE_convert));
+        SPA_PARAM_PORT_CONFIG_mode,       SPA_POD_Id(SPA_PARAM_PORT_CONFIG_MODE_convert),
+        SPA_PARAM_PORT_CONFIG_control,    SPA_POD_Bool(control));
   } else {
     param = spa_format_audio_raw_build(&pod_builder, SPA_PARAM_Format, &self->format);
     param = spa_pod_builder_add_object(&pod_builder,
         SPA_TYPE_OBJECT_ParamPortConfig,  SPA_PARAM_PortConfig,
         SPA_PARAM_PORT_CONFIG_direction,  SPA_POD_Id(direction),
         SPA_PARAM_PORT_CONFIG_mode,       SPA_POD_Id(SPA_PARAM_PORT_CONFIG_MODE_dsp),
+        SPA_PARAM_PORT_CONFIG_control,    SPA_POD_Bool(control),
         SPA_PARAM_PORT_CONFIG_format,     SPA_POD_Pod(param));
   }
 
diff --git a/modules/module-pipewire/audio-softdsp-endpoint/convert.c b/modules/module-pipewire/audio-softdsp-endpoint/convert.c
index 3ea23d30..54903626 100644
--- a/modules/module-pipewire/audio-softdsp-endpoint/convert.c
+++ b/modules/module-pipewire/audio-softdsp-endpoint/convert.c
@@ -117,6 +117,7 @@ on_audio_convert_core_done (WpCore *core, GAsyncResult *res,
   struct spa_pod_builder pod_builder = SPA_POD_BUILDER_INIT(buf, sizeof(buf));
   struct spa_pod *format;
   struct spa_pod *param;
+  gboolean control;
 
   wp_core_sync_finish (core, res, &error);
   if (error) {
@@ -131,6 +132,9 @@ on_audio_convert_core_done (WpCore *core, GAsyncResult *res,
   format = spa_format_audio_raw_build(&pod_builder, SPA_PARAM_Format,
       &self->format);
 
+  /* Only enable control port for input streams */
+  control = direction == PW_DIRECTION_INPUT;
+
   /* Configure audioconvert to be both merger and splitter; this means it will
      have an equal number of input and output ports and just passthrough the
      same format, but with altered volume.
@@ -147,6 +151,7 @@ on_audio_convert_core_done (WpCore *core, GAsyncResult *res,
       SPA_TYPE_OBJECT_ParamPortConfig,  SPA_PARAM_PortConfig,
       SPA_PARAM_PORT_CONFIG_direction,  SPA_POD_Id(direction),
       SPA_PARAM_PORT_CONFIG_mode,       SPA_POD_Id(SPA_PARAM_PORT_CONFIG_MODE_dsp),
+      SPA_PARAM_PORT_CONFIG_control,    SPA_POD_Bool(control),
       SPA_PARAM_PORT_CONFIG_format,     SPA_POD_Pod(format));
   wp_audio_stream_set_port_config (WP_AUDIO_STREAM (self), param);
   wp_audio_stream_finish_port_config (WP_AUDIO_STREAM (self));