diff --git a/lib/sheet_viewer_page.dart b/lib/sheet_viewer_page.dart
index e60d8da..a11d8ef 100644
--- a/lib/sheet_viewer_page.dart
+++ b/lib/sheet_viewer_page.dart
@@ -315,7 +315,7 @@ class Pages extends StatelessWidget {
                 document: document,
                 pageNumber: currentPageNumber,
                 maximumDpi: 300,
-                alignment: config.twoPageMode
+                alignment: config.twoPageMode && numPages >= 2
                     ? Alignment.centerRight
                     : Alignment.center,
               ),
@@ -330,7 +330,7 @@ class Pages extends StatelessWidget {
           ),
         ),
         Visibility(
-          visible: config.twoPageMode == true,
+          visible: config.twoPageMode == true && numPages >= 2,
           child: Expanded(
             child: Stack(
               children: [