diff --git a/ext/fg/js/background.js b/ext/fg/js/background.js
index 52b533be..c072468b 100644
--- a/ext/fg/js/background.js
+++ b/ext/fg/js/background.js
@@ -28,7 +28,7 @@ function bgInvoke(action, params={}) {
                 }
             });
         } catch (e) {
-            window.orphaned = true;
+            window.yomichanOrphaned = true;
             reject(e.message);
         }
     });
diff --git a/ext/fg/js/display-frame.js b/ext/fg/js/display-frame.js
index b29a0379..c7da43e8 100644
--- a/ext/fg/js/display-frame.js
+++ b/ext/fg/js/display-frame.js
@@ -44,7 +44,7 @@ window.displayFrame = new class extends Display {
     }
 
     handleError(error) {
-        if (window.orphaned) {
+        if (window.yomichanOrphaned) {
             this.showOrphaned();
         } else {
             window.alert(`Error: ${error}`);
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index e32a630d..8b4c182c 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -238,7 +238,7 @@ window.yomichanFrontend = new class {
     }
 
     handleError(error, textSource) {
-        if (window.orphaned) {
+        if (window.yomichanOrphaned) {
             if (textSource && this.options.scanning.modifier !== 'none') {
                 this.popup.showOrphaned(textSource.getRect(), this.options);
             }