diff --git a/src/pipewire/filter.c b/src/pipewire/filter.c
index 64f923cf0..c78f956d8 100644
--- a/src/pipewire/filter.c
+++ b/src/pipewire/filter.c
@@ -625,7 +625,7 @@ static int impl_port_set_param(void *object,
 	if ((res = update_params(impl, port, id, &param, param ? 1 : 0)) < 0)
 		return res;
 
-	if (id == SPA_PARAM_Format && param == NULL)
+	if (id == SPA_PARAM_Format)
 		clear_buffers(port);
 
 	pw_filter_emit_param_changed(filter, port->user_data, id, param);
diff --git a/src/pipewire/stream.c b/src/pipewire/stream.c
index 222640e65..584870013 100644
--- a/src/pipewire/stream.c
+++ b/src/pipewire/stream.c
@@ -622,7 +622,7 @@ static int impl_port_set_param(void *object,
 	if ((res = update_params(impl, id, &param, param ? 1 : 0)) < 0)
 		return res;
 
-	if (id == SPA_PARAM_Format && param == NULL)
+	if (id == SPA_PARAM_Format)
 		clear_buffers(stream);
 
 	pw_stream_emit_param_changed(stream, id, param);