diff --git a/spa/plugins/libcamera/libcamera-source.cpp b/spa/plugins/libcamera/libcamera-source.cpp
index 9a912a005..791d0c417 100644
--- a/spa/plugins/libcamera/libcamera-source.cpp
+++ b/spa/plugins/libcamera/libcamera-source.cpp
@@ -1908,6 +1908,9 @@ int port_set_format(struct impl *impl, struct port *port,
 			port->current_format = info;
 	}
 
+	if (try_only)
+		return 0;
+
 	impl->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS;
 	port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
 	if (port->current_format) {