diff --git a/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c b/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c
index 2382b6da8..30d44f954 100644
--- a/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c
+++ b/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c
@@ -212,6 +212,8 @@ struct module *create_module_ladspa_sink(struct impl *impl, const char *argument
 	}
 	if (pw_properties_get(capture_props, PW_KEY_MEDIA_CLASS) == NULL)
 		pw_properties_set(capture_props, PW_KEY_MEDIA_CLASS, "Audio/Sink");
+	if (pw_properties_get(capture_props, PW_KEY_DEVICE_CLASS) == NULL)
+		pw_properties_set(capture_props, PW_KEY_DEVICE_CLASS, "filter");
 
 	if ((str = pw_properties_get(props, "master")) != NULL ||
 	    (str = pw_properties_get(props, "sink_master")) != NULL) {
diff --git a/src/modules/module-protocol-pulse/modules/module-ladspa-source.c b/src/modules/module-protocol-pulse/modules/module-ladspa-source.c
index dd49f80aa..9f6b6770b 100644
--- a/src/modules/module-protocol-pulse/modules/module-ladspa-source.c
+++ b/src/modules/module-protocol-pulse/modules/module-ladspa-source.c
@@ -212,6 +212,8 @@ struct module *create_module_ladspa_source(struct impl *impl, const char *argume
 	}
 	if (pw_properties_get(playback_props, PW_KEY_MEDIA_CLASS) == NULL)
 		pw_properties_set(playback_props, PW_KEY_MEDIA_CLASS, "Audio/Source");
+	if (pw_properties_get(playback_props, PW_KEY_DEVICE_CLASS) == NULL)
+		pw_properties_set(playback_props, PW_KEY_DEVICE_CLASS, "filter");
 
 	if ((str = pw_properties_get(props, "master")) != NULL ||
 	    (str = pw_properties_get(props, "source_master")) != NULL) {
diff --git a/src/modules/module-protocol-pulse/modules/module-remap-sink.c b/src/modules/module-protocol-pulse/modules/module-remap-sink.c
index 9bb5a1471..d489ea363 100644
--- a/src/modules/module-protocol-pulse/modules/module-remap-sink.c
+++ b/src/modules/module-protocol-pulse/modules/module-remap-sink.c
@@ -176,7 +176,10 @@ struct module *create_module_remap_sink(struct impl *impl, const char *argument)
 		module_args_add_props(capture_props, str);
 		pw_properties_set(props, "sink_properties", NULL);
 	}
-	pw_properties_set(capture_props, PW_KEY_MEDIA_CLASS, "Audio/Sink");
+	if (pw_properties_get(capture_props, PW_KEY_MEDIA_CLASS) == NULL)
+		pw_properties_set(capture_props, PW_KEY_MEDIA_CLASS, "Audio/Sink");
+	if (pw_properties_get(capture_props, PW_KEY_DEVICE_CLASS) == NULL)
+		pw_properties_set(capture_props, PW_KEY_DEVICE_CLASS, "filter");
 
 	if (pw_properties_get(capture_props, PW_KEY_NODE_DESCRIPTION) == NULL) {
 		str = pw_properties_get(props, "master");
diff --git a/src/modules/module-protocol-pulse/modules/module-remap-source.c b/src/modules/module-protocol-pulse/modules/module-remap-source.c
index a220ec6a8..d71a5325f 100644
--- a/src/modules/module-protocol-pulse/modules/module-remap-source.c
+++ b/src/modules/module-protocol-pulse/modules/module-remap-source.c
@@ -176,7 +176,10 @@ struct module *create_module_remap_source(struct impl *impl, const char *argumen
 		module_args_add_props(playback_props, str);
 		pw_properties_set(props, "source_properties", NULL);
 	}
-	pw_properties_set(playback_props, PW_KEY_MEDIA_CLASS, "Audio/Source");
+	if (pw_properties_get(playback_props, PW_KEY_MEDIA_CLASS) == NULL)
+		pw_properties_set(playback_props, PW_KEY_MEDIA_CLASS, "Audio/Source");
+	if (pw_properties_get(playback_props, PW_KEY_DEVICE_CLASS) == NULL)
+		pw_properties_set(playback_props, PW_KEY_DEVICE_CLASS, "filter");
 
 	if (pw_properties_get(playback_props, PW_KEY_NODE_DESCRIPTION) == NULL) {
 		str = pw_properties_get(props, "master");