diff --git a/src/calibre/gui2/convert/page_setup.ui b/src/calibre/gui2/convert/page_setup.ui
index 0aa2a97e70..0ea2093697 100644
--- a/src/calibre/gui2/convert/page_setup.ui
+++ b/src/calibre/gui2/convert/page_setup.ui
@@ -115,6 +115,9 @@
           <property name="decimals">
            <number>1</number>
           </property>
+          <property name="maximum">
+           <double>200.000000000000000</double>
+          </property>
          </widget>
         </item>
         <item row="1" column="0">
@@ -135,6 +138,9 @@
           <property name="decimals">
            <number>1</number>
           </property>
+          <property name="maximum">
+           <double>200.000000000000000</double>
+          </property>
          </widget>
         </item>
         <item row="2" column="0">
@@ -155,6 +161,9 @@
           <property name="decimals">
            <number>1</number>
           </property>
+          <property name="maximum">
+           <double>200.000000000000000</double>
+          </property>
          </widget>
         </item>
         <item row="3" column="0">
@@ -175,6 +184,9 @@
           <property name="decimals">
            <number>1</number>
           </property>
+          <property name="maximum">
+           <double>200.000000000000000</double>
+          </property>
          </widget>
         </item>
        </layout>
diff --git a/src/calibre/gui2/dialogs/choose_format.py b/src/calibre/gui2/dialogs/choose_format.py
index e0fcb0868b..e1f32e3d26 100644
--- a/src/calibre/gui2/dialogs/choose_format.py
+++ b/src/calibre/gui2/dialogs/choose_format.py
@@ -12,7 +12,8 @@ class ChooseFormatDialog(QDialog, Ui_ChooseFormatDialog):
         QDialog.__init__(self, window)
         Ui_ChooseFormatDialog.__init__(self)
         self.setupUi(self)
-        self.connect(self.formats, SIGNAL('activated(QModelIndex)'), lambda i: self.accept())
+        self.connect(self.formats, SIGNAL('activated(QModelIndex)'),
+                self.activated_slot)
 
         self.msg.setText(msg)
         for format in formats:
@@ -20,6 +21,15 @@ class ChooseFormatDialog(QDialog, Ui_ChooseFormatDialog):
                                                  format.upper()))
         self._formats = formats
         self.formats.setCurrentRow(0)
+        self._format = None
+
+    def activated_slot(self, *args):
+        self.accept()
 
     def format(self):
-        return self._formats[self.formats.currentRow()]
+        return self._format
+
+    def accept(self):
+        self._format = self._formats[self.formats.currentRow()]
+        return QDialog.accept(self)
+
diff --git a/src/calibre/gui2/ui.py b/src/calibre/gui2/ui.py
index 6a3c637340..2a43f39f43 100644
--- a/src/calibre/gui2/ui.py
+++ b/src/calibre/gui2/ui.py
@@ -337,7 +337,8 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
         QObject.connect(self.view_menu.actions()[0],
                 SIGNAL("triggered(bool)"), self.view_book)
         QObject.connect(self.view_menu.actions()[1],
-                SIGNAL("triggered(bool)"), self.view_specific_format)
+                SIGNAL("triggered(bool)"), self.view_specific_format,
+                Qt.QueuedConnection)
         self.connect(self.action_open_containing_folder,
                 SIGNAL('triggered(bool)'), self.view_folder)
         self.delete_menu.actions()[0].triggered.connect(self.delete_books)
@@ -1642,12 +1643,9 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
         row = rows[0].row()
         formats = self.library_view.model().db.formats(row).upper().split(',')
         d = ChooseFormatDialog(self, _('Choose the format to view'), formats)
-        d.exec_()
-        if d.result() == QDialog.Accepted:
+        if d.exec_() == QDialog.Accepted:
             format = d.format()
             self.view_format(row, format)
-        else:
-            return
 
     def view_folder(self, *args):
         rows = self.current_view().selectionModel().selectedRows()