diff --git a/apps/pdfeditor/main/app/controller/Toolbar.js b/apps/pdfeditor/main/app/controller/Toolbar.js
index 578e8286ba..4fc07adc52 100644
--- a/apps/pdfeditor/main/app/controller/Toolbar.js
+++ b/apps/pdfeditor/main/app/controller/Toolbar.js
@@ -441,6 +441,8 @@ define([
             this._state.pageCount = count;
             this.toolbar && this.toolbar.fieldPages && this.toolbar.fieldPages.setFixedValue('/ ' + count);
             this.toolbar.lockToolbar(Common.enumLock.singlePage, count<2, {array: [this.toolbar.btnDelPage]});
+            this.toolbar.lockToolbar(Common.enumLock.firstPage, this._state.currentPage<1, {array: [this.toolbar.btnFirstPage, this.toolbar.btnPrevPage]});
+            this.toolbar.lockToolbar(Common.enumLock.lastPage, this._state.currentPage>=this._state.pageCount-1, {array: [this.toolbar.btnLastPage, this.toolbar.btnNextPage]});
         },
 
         onCurrentPage: function(value) {
diff --git a/apps/pdfeditor/main/app/view/Statusbar.js b/apps/pdfeditor/main/app/view/Statusbar.js
index 75c71c1a96..5ef5a4da28 100644
--- a/apps/pdfeditor/main/app/view/Statusbar.js
+++ b/apps/pdfeditor/main/app/view/Statusbar.js
@@ -52,6 +52,8 @@ define([
 
         function _onCountPages(count){
             this.pages.set('count', count);
+            this.btnPagePrev && this.btnPagePrev.setDisabled(this.pages.get('current')<1);
+            this.btnPageNext && this.btnPageNext.setDisabled(this.pages.get('current')>=this.pages.get('count')-1);
         }
 
         function _onCurrentPage(number){