diff --git a/src/modules/module-filter-chain.c b/src/modules/module-filter-chain.c
index 17f891b94..3550871c3 100644
--- a/src/modules/module-filter-chain.c
+++ b/src/modules/module-filter-chain.c
@@ -1112,6 +1112,18 @@ static void state_changed(void *data, enum pw_stream_state old,
 	}
 }
 
+static void param_format_cleared(struct impl *impl, struct pw_stream *other,
+		struct spa_audio_info_raw *other_info)
+{
+	uint8_t buffer[1024];
+	struct spa_pod_builder b;
+	const struct spa_pod *params[1];
+
+	spa_pod_builder_init(&b, buffer, sizeof(buffer));
+	params[0] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat, other_info);
+	pw_stream_update_params(other, params, 1);
+}
+
 static void param_changed(void *data, uint32_t id, const struct spa_pod *param)
 {
 	struct impl *impl = data;
@@ -1122,6 +1134,8 @@ static void param_changed(void *data, uint32_t id, const struct spa_pod *param)
 	case SPA_PARAM_Format:
 		if (param == NULL) {
 			graph_cleanup(graph);
+			param_format_cleared(impl, impl->capture, &impl->capture_info);
+			param_format_cleared(impl, impl->playback, &impl->playback_info);
 		} else {
 			struct spa_audio_info_raw info;
 			spa_zero(info);
diff --git a/src/modules/module-loopback.c b/src/modules/module-loopback.c
index b80e90802..9e9b3d926 100644
--- a/src/modules/module-loopback.c
+++ b/src/modules/module-loopback.c
@@ -323,6 +323,18 @@ static void param_latency_changed(struct impl *impl, const struct spa_pod *param
 	impl->recalc_delay = true;
 }
 
+static void param_format_cleared(struct impl *impl, struct pw_stream *other,
+		struct spa_audio_info_raw *other_info)
+{
+	uint8_t buffer[1024];
+	struct spa_pod_builder b;
+	const struct spa_pod *params[1];
+
+	spa_pod_builder_init(&b, buffer, sizeof(buffer));
+	params[0] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat, other_info);
+	pw_stream_update_params(other, params, 1);
+}
+
 static void stream_state_changed(void *data, enum pw_stream_state old,
 		enum pw_stream_state state, const char *error)
 {
@@ -377,8 +389,10 @@ static void capture_param_changed(void *data, uint32_t id, const struct spa_pod
 	case SPA_PARAM_Format:
 	{
 		struct spa_audio_info_raw info;
-		if (param == NULL)
+		if (param == NULL) {
+			param_format_cleared(impl, impl->playback, &impl->playback_info);
 			return;
+		}
 		if (spa_format_audio_raw_parse(param, &info) < 0)
 			return;
 		if (info.rate == 0 ||
@@ -416,6 +430,12 @@ static void playback_param_changed(void *data, uint32_t id, const struct spa_pod
 	struct impl *impl = data;
 
 	switch (id) {
+	case SPA_PARAM_Format:
+		if (param == NULL) {
+			param_format_cleared(impl, impl->capture, &impl->capture_info);
+			return;
+		}
+		break;
 	case SPA_PARAM_Latency:
 		param_latency_changed(impl, param, &impl->playback_latency, impl->capture);
 		break;