diff --git a/src/extensionModules/BoxOrderManager.ts b/src/extensionModules/BoxOrderManager.ts
index cfb4dbe..664d590 100644
--- a/src/extensionModules/BoxOrderManager.ts
+++ b/src/extensionModules/BoxOrderManager.ts
@@ -338,10 +338,14 @@ export default class BoxOrderManager extends GObject.Object {
 
                 // Then get a settings identifier for the item.
                 let itemSettingsId;
-                if (role.startsWith("appindicator-")) {
+                if (role.startsWith("appindicator-") &&
+                    (indicatorContainer.get_child() as any)?._indicator) {
                     // If the role indicates that the item is an
                     // AppIndicator/KStatusNotifierItem item, then handle it
                     // differently.
+                    // Legacy (XEmbed) tray icons added by the same extension
+                    // also get an "appindicator-" role, but have no
+                    // _indicator, so they're treated like any other item.
                     try {
                         itemSettingsId = this.#handleAppIndicatorItem(indicatorContainer, role);
                     } catch (e) {