diff --git a/src/modules/sway/workspaces.cpp b/src/modules/sway/workspaces.cpp
index 68f1ac451..8671288b6 100644
--- a/src/modules/sway/workspaces.cpp
+++ b/src/modules/sway/workspaces.cpp
@@ -156,7 +156,7 @@ void Workspaces::onCmd(const struct Ipc::ipc_response &res) {
                 if (output.asString() == bar_.output->name) {
                   Json::Value v;
                   v["name"] = p_w_name;
-                  v["output"] = bar_.output->name;
+                  v["target_output"] = bar_.output->name;
                   v["num"] = convertWorkspaceNameToNum(p_w_name);
                   workspaces_.emplace_back(std::move(v));
                   break;
@@ -166,7 +166,7 @@ void Workspaces::onCmd(const struct Ipc::ipc_response &res) {
               // Adding to all outputs
               Json::Value v;
               v["name"] = p_w_name;
-              v["output"] = "";
+              v["target_output"] = "";
               v["num"] = convertWorkspaceNameToNum(p_w_name);
               workspaces_.emplace_back(std::move(v));
             }
@@ -313,7 +313,7 @@ auto Workspaces::update() -> void {
     } else {
       button.get_style_context()->remove_class("urgent");
     }
-    if (hasFlag((*it), "target_output")) {
+    if ((*it)["target_output"].isString()) {
       button.get_style_context()->add_class("persistent");
     } else {
       button.get_style_context()->remove_class("persistent");