diff --git a/src/modules/wlr/workspace_manager.cpp b/src/modules/wlr/workspace_manager.cpp
index 8933d691..7f97d294 100644
--- a/src/modules/wlr/workspace_manager.cpp
+++ b/src/modules/wlr/workspace_manager.cpp
@@ -209,8 +209,8 @@ WorkspaceGroup::WorkspaceGroup(const Bar &bar, Gtk::Box &box, const Json::Value
 }
 
 auto WorkspaceGroup::fill_persistent_workspaces() -> void {
-  if (config_["persistent_workspaces"].isObject() && !workspace_manager_.all_outputs()) {
-    const Json::Value &p_workspaces = config_["persistent_workspaces"];
+  if (config_["persistent-workspaces"].isObject() && !workspace_manager_.all_outputs()) {
+    const Json::Value &p_workspaces = config_["persistent-workspaces"];
     const std::vector<std::string> p_workspaces_names = p_workspaces.getMemberNames();
 
     for (const std::string &p_w_name : p_workspaces_names) {