diff --git a/spa/plugins/v4l2/v4l2-device.c b/spa/plugins/v4l2/v4l2-device.c
index 2379d2105..4257a01c1 100644
--- a/spa/plugins/v4l2/v4l2-device.c
+++ b/spa/plugins/v4l2/v4l2-device.c
@@ -231,6 +231,7 @@ impl_init(const struct spa_handle_factory *factory,
 	handle->clear = impl_clear, this = (struct impl *) handle;
 
 	this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
+	v4l2_log_topic_init(this->log);
 
 	spa_hook_list_init(&this->hooks);
 
diff --git a/spa/plugins/v4l2/v4l2-udev.c b/spa/plugins/v4l2/v4l2-udev.c
index df99f7b4a..85bda2bc0 100644
--- a/spa/plugins/v4l2/v4l2-udev.c
+++ b/spa/plugins/v4l2/v4l2-udev.c
@@ -775,6 +775,8 @@ impl_init(const struct spa_handle_factory *factory,
 #endif
 
 	this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
+	v4l2_log_topic_init(this->log);
+
 	this->main_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Loop);
 
 	if (this->main_loop == NULL) {