diff --git a/web/pdf_history.js b/web/pdf_history.js
index 5c834f386..522af3e6a 100644
--- a/web/pdf_history.js
+++ b/web/pdf_history.js
@@ -21,7 +21,7 @@ const HASH_CHANGE_TIMEOUT = 1000; // milliseconds
 // Heuristic value used when adding the current position to the browser history.
 const POSITION_UPDATED_THRESHOLD = 50;
 // Heuristic value used when adding a temporary position to the browser history.
-const UPDATE_VIEWAREA_TIMEOUT = 2000; // milliseconds
+const UPDATE_VIEWAREA_TIMEOUT = 1000; // milliseconds
 
 /**
  * @typedef {Object} PDFHistoryOptions
@@ -493,34 +493,6 @@ class PDFHistory {
       });
     }
 
-    // This case corresponds to navigation backwards in the browser history.
-    if (state.uid < this._currentUid && this._position && this._destination) {
-      let shouldGoBack = false;
-
-      if (this._destination.temporary) {
-        // If the `this._destination` contains a *temporary* position, always
-        // push the `this._position` to the browser history before moving back.
-        this._pushOrReplaceState(this._position);
-        shouldGoBack = true;
-      } else if (this._destination.page &&
-                 this._destination.page !== this._position.first &&
-                 this._destination.page !== this._position.page) {
-        // If the `page` of the `this._destination` is no longer visible,
-        // push the `this._position` to the browser history before moving back.
-        this._pushOrReplaceState(this._destination);
-        this._pushOrReplaceState(this._position);
-        shouldGoBack = true;
-      }
-      if (shouldGoBack) {
-        // After `window.history.back()`, we must not enter this block on the
-        // resulting 'popstate' event, since that may cause an infinite loop.
-        this._currentUid = state.uid;
-
-        window.history.back();
-        return;
-      }
-    }
-
     // Navigate to the new destination.
     let destination = state.destination;
     this._updateInternalState(destination, state.uid,