diff --git a/openlp/core/lib/theme.py b/openlp/core/lib/theme.py
index 486f89b18..16ee1be37 100644
--- a/openlp/core/lib/theme.py
+++ b/openlp/core/lib/theme.py
@@ -444,6 +444,17 @@ class ThemeXML(object):
         element.appendChild(child)
         return child
 
+    def set_default_header_footer(self, main_width, main_height, footer_width,
+        footer_height):
+        """
+        Set the header and footer size into the current primary screen
+        """
+        self.font_main_width = main_width
+        self.font_main_height = main_height
+        self.font_footer_width = footer_width
+        self.font_footer_y = main_height+20
+        self.font_footer_height = footer_height
+
     def dump_xml(self):
         """
         Dump the XML to file used for debugging
diff --git a/openlp/core/ui/themeform.py b/openlp/core/ui/themeform.py
index 63df0ab8d..face5938f 100644
--- a/openlp/core/ui/themeform.py
+++ b/openlp/core/ui/themeform.py
@@ -427,28 +427,25 @@ class ThemeForm(QtGui.QWizard, Ui_ThemeWizard):
         """
         Handle the display and state of the Position page.
         """
-        # Get the QRect of a screen
-        screen = QtGui.QDesktopWidget().availableGeometry()
         # Main Area
         self.mainPositionCheckBox.setChecked(not self.theme.font_main_override)
         self.setField(u'mainPositionX', QtCore.QVariant(self.theme.font_main_x))
         self.setField(u'mainPositionY', QtCore.QVariant(self.theme.font_main_y))
         self.setField(u'mainPositionHeight',
-            QtCore.QVariant(screen.height() - 110))
+            QtCore.QVariant(self.theme.font_main_height))
         self.setField(u'mainPositionWidth',
-            QtCore.QVariant(screen.width() - 20))
+            QtCore.QVariant(self.theme.font_main_width))
         # Footer
         self.footerPositionCheckBox.setChecked(
             not self.theme.font_footer_override)
         self.setField(u'footerPositionX',
             QtCore.QVariant(self.theme.font_footer_x))
         self.setField(u'footerPositionY',
-            QtCore.QVariant(screen.height() - 100))
+            QtCore.QVariant(self.theme.font_footer_y))
         self.setField(u'footerPositionHeight',
-            QtCore.QVariant(120))
-
+            QtCore.QVariant(self.theme.font_footer_height))
         self.setField(u'footerPositionWidth',
-            QtCore.QVariant(screen.width() - 20))
+            QtCore.QVariant(self.theme.font_footer_width))
 
     def setAlignmentPageValues(self):
         """
diff --git a/openlp/core/ui/thememanager.py b/openlp/core/ui/thememanager.py
index 72a8b7e3b..4766e0693 100644
--- a/openlp/core/ui/thememanager.py
+++ b/openlp/core/ui/thememanager.py
@@ -43,7 +43,7 @@ from openlp.core.lib.theme import ThemeXML, BackgroundType, VerticalType, \
 from openlp.core.lib.ui import UiStrings, critical_error_message_box, \
     create_widget_action
 from openlp.core.theme import Theme
-from openlp.core.ui import FileRenameForm, ThemeForm
+from openlp.core.ui import FileRenameForm, ThemeForm, ScreenList
 from openlp.core.utils import AppLocation, delete_file, get_filesystem_encoding
 
 log = logging.getLogger(__name__)
@@ -255,6 +255,11 @@ class ThemeManager(QtGui.QWidget):
         editing form for the user to make their customisations.
         """
         theme = ThemeXML()
+        screens = ScreenList.get_instance()
+        primary_screen = screens.current
+        theme.set_default_header_footer(primary_screen[u'size'].width()-20,
+            primary_screen[u'size'].height() - 100,
+            primary_screen[u'size'].width()-20, 70)
         self.themeForm.theme = theme
         self.themeForm.exec_()