diff --git a/web/app_options.js b/web/app_options.js
index 3178b0434..f0408b725 100644
--- a/web/app_options.js
+++ b/web/app_options.js
@@ -39,9 +39,10 @@ if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
     }
   })();
 
+  // Support: Safari<13.1
   (function checkResizeObserver() {
     if (typeof ResizeObserver === "undefined") {
-      compatibilityParams.annotationEditorEnabled = false;
+      compatibilityParams.annotationEditorMode = -1;
     }
   })();
 }
diff --git a/web/base_viewer.js b/web/base_viewer.js
index 1e5128ddb..d73ad1263 100644
--- a/web/base_viewer.js
+++ b/web/base_viewer.js
@@ -67,6 +67,7 @@ import {
 } from "./ui_utils.js";
 import { AnnotationEditorLayerBuilder } from "./annotation_editor_layer_builder.js";
 import { AnnotationLayerBuilder } from "./annotation_layer_builder.js";
+import { compatibilityParams } from "./app_options.js";
 import { NullL10n } from "./l10n_utils.js";
 import { PDFPageView } from "./pdf_page_view.js";
 import { PDFRenderingQueue } from "./pdf_rendering_queue.js";
@@ -85,6 +86,9 @@ const PagesCountLimit = {
   PAUSE_EAGER_PAGE_INIT: 250,
 };
 
+const ANNOTATION_EDITOR_MODE =
+  compatibilityParams.annotationEditorMode ?? AnnotationEditorType.DISABLE;
+
 function isValidAnnotationEditorMode(mode) {
   return (
     Object.values(AnnotationEditorType).includes(mode) &&
@@ -278,7 +282,7 @@ class BaseViewer {
     this.#annotationMode =
       options.annotationMode ?? AnnotationMode.ENABLE_FORMS;
     this.#annotationEditorMode =
-      options.annotationEditorMode ?? AnnotationEditorType.DISABLE;
+      options.annotationEditorMode ?? ANNOTATION_EDITOR_MODE;
     this.imageResourcesPath = options.imageResourcesPath || "";
     this.enablePrintAutoRotate = options.enablePrintAutoRotate || false;
     this.renderer = options.renderer || RendererType.CANVAS;