diff --git a/web/base_viewer.js b/web/base_viewer.js
index f055122b2..3ba5d3a9d 100644
--- a/web/base_viewer.js
+++ b/web/base_viewer.js
@@ -1321,8 +1321,6 @@ class BaseViewer {
         : currentScaleValue;
 
     const pageNumber = firstPage.id;
-    let pdfOpenParams = "#page=" + pageNumber;
-    pdfOpenParams += "&zoom=" + normalizedScaleValue;
     const currentPageView = this._pages[pageNumber - 1];
     const container = this.container;
     const topLeft = currentPageView.getPagePoint(
@@ -1331,7 +1329,11 @@ class BaseViewer {
     );
     const intLeft = Math.round(topLeft[0]);
     const intTop = Math.round(topLeft[1]);
-    pdfOpenParams += "," + intLeft + "," + intTop;
+
+    let pdfOpenParams = `#page=${pageNumber}`;
+    if (!this.isInPresentationMode) {
+      pdfOpenParams += `&zoom=${normalizedScaleValue},${intLeft},${intTop}`;
+    }
 
     this._location = {
       pageNumber,
diff --git a/web/pdf_history.js b/web/pdf_history.js
index c6ef42cc7..b7dec87af 100644
--- a/web/pdf_history.js
+++ b/web/pdf_history.js
@@ -16,11 +16,7 @@
 /** @typedef {import("./event_utils").EventBus} EventBus */
 /** @typedef {import("./interfaces").IPDFLinkService} IPDFLinkService */
 
-import {
-  isValidRotation,
-  parseQueryString,
-  PresentationModeState,
-} from "./ui_utils.js";
+import { isValidRotation, parseQueryString } from "./ui_utils.js";
 import { waitOnEventOrTimeout } from "./event_utils.js";
 
 // Heuristic value used when force-resetting `this._blockHashChange`.
@@ -69,13 +65,8 @@ class PDFHistory {
     this.reset();
 
     this._boundEvents = null;
-    this._isViewerInPresentationMode = false;
-    // Ensure that we don't miss either a 'presentationmodechanged' or a
-    // 'pagesinit' event, by registering the listeners immediately.
-    this.eventBus._on("presentationmodechanged", evt => {
-      this._isViewerInPresentationMode =
-        evt.state !== PresentationModeState.NORMAL;
-    });
+    // Ensure that we don't miss a "pagesinit" event,
+    // by registering the listener immediately.
     this.eventBus._on("pagesinit", () => {
       this._isPagesLoaded = false;
 
@@ -566,9 +557,7 @@ class PDFHistory {
     }
 
     this._position = {
-      hash: this._isViewerInPresentationMode
-        ? `page=${location.pageNumber}`
-        : location.pdfOpenParams.substring(1),
+      hash: location.pdfOpenParams.substring(1),
       page: this.linkService.page,
       first: location.pageNumber,
       rotation: location.rotation,