diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index 8b786145..52278be2 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -314,9 +314,24 @@ struct focus_inactive_data {
 static void focus_inactive_children_iterator(struct sway_node *node,
 		void *_data) {
 	struct focus_inactive_data *data = _data;
-	if (node_get_parent(node) == data->node) {
-		json_object_array_add(data->object, json_object_new_int(node->id));
+	json_object *focus = data->object;
+	if (data->node == &root->node) {
+		struct sway_output *output = node_get_output(node);
+		if (output == NULL) {
+			return;
+		}
+		size_t id = output->node.id;
+		int len = json_object_array_length(focus);
+		for (int i = 0; i < len; ++i) {
+			if ((size_t) json_object_get_int(json_object_array_get_idx(focus, i)) == id) {
+				return;
+			}
+		}
+		node = &output->node;
+	} else if (node_get_parent(node) != data->node) {
+		return;
 	}
+	json_object_array_add(focus, json_object_new_int(node->id));
 }
 
 json_object *ipc_json_describe_node(struct sway_node *node) {
diff --git a/sway/tree/node.c b/sway/tree/node.c
index 74661c1a..dcab1c9b 100644
--- a/sway/tree/node.c
+++ b/sway/tree/node.c
@@ -74,8 +74,10 @@ void node_get_box(struct sway_node *node, struct wlr_box *box) {
 
 struct sway_output *node_get_output(struct sway_node *node) {
 	switch (node->type) {
-	case N_CONTAINER:
-		return node->sway_container->workspace->output;
+	case N_CONTAINER: {
+		struct sway_workspace *ws = node->sway_container->workspace;
+		return ws ? ws->output : NULL;
+    }
 	case N_WORKSPACE:
 		return node->sway_workspace->output;
 	case N_OUTPUT: