diff --git a/openlp/core/lib/mediamanageritem.py b/openlp/core/lib/mediamanageritem.py
index 813348e01..e0af60f05 100644
--- a/openlp/core/lib/mediamanageritem.py
+++ b/openlp/core/lib/mediamanageritem.py
@@ -315,8 +315,8 @@ class MediaManagerItem(QtGui.QWidget):
         """
         Turn file from Drag and Drop into an array so the Validate code can run it.
 
-        ``files``
-            The list of files to be loaded
+        ``data``
+            A dictionary containing the list of files to be loaded and the target
         """
         new_files = []
         error_shown = False
@@ -335,6 +335,9 @@ class MediaManagerItem(QtGui.QWidget):
     def dnd_move_internal(self, target):
         """
         Handle internal moving of media manager items
+
+        ``target``
+            The target of the DnD action
         """
         pass
 
@@ -345,6 +348,9 @@ class MediaManagerItem(QtGui.QWidget):
 
         ``files``
             The files to be loaded.
+
+        ``target_group``
+            The QTreeWidgetItem of the group that will be the parent of the added files
         """
         names = []
         full_list = []
diff --git a/openlp/core/lib/plugin.py b/openlp/core/lib/plugin.py
index 2275cc112..dd2ec2255 100644
--- a/openlp/core/lib/plugin.py
+++ b/openlp/core/lib/plugin.py
@@ -219,6 +219,9 @@ class Plugin(QtCore.QObject):
     def upgrade_settings(self, settings):
         """
         Upgrade the settings of this plugin.
+
+        ``settings``
+            The Settings object containing the old settings.
         """
         pass
 
diff --git a/openlp/core/lib/treewidgetwithdnd.py b/openlp/core/lib/treewidgetwithdnd.py
index 40a7ea253..12ee0d12f 100644
--- a/openlp/core/lib/treewidgetwithdnd.py
+++ b/openlp/core/lib/treewidgetwithdnd.py
@@ -64,9 +64,11 @@ class TreeWidgetWithDnD(QtGui.QTreeWidget):
 
     def mouseMoveEvent(self, event):
         """
-        Drag and drop event does not care what data is selected
-        as the recipient will use events to request the data move
-        just tell it what plugin to call
+        Drag and drop event does not care what data is selected as the recipient will use events to request the data
+        move just tell it what plugin to call
+
+        ``event``
+            The event that occurred
         """
         if event.buttons() != QtCore.Qt.LeftButton:
             event.ignore()
@@ -81,6 +83,12 @@ class TreeWidgetWithDnD(QtGui.QTreeWidget):
         drag.start(QtCore.Qt.CopyAction)
 
     def dragEnterEvent(self, event):
+        """
+        Receive drag enter event, check if it is a file or internal object and allow it if it is.
+
+        ``event``
+            The event that occurred
+        """
         if event.mimeData().hasUrls():
             event.accept()
         elif self.allow_internal_dnd:
@@ -89,6 +97,12 @@ class TreeWidgetWithDnD(QtGui.QTreeWidget):
             event.ignore()
 
     def dragMoveEvent(self, event):
+        """
+        Receive drag move event, check if it is a file or internal object and allow it if it is.
+
+        ``event``
+            The event that occurred
+        """
         QtGui.QTreeWidget.dragMoveEvent(self, event)
         if event.mimeData().hasUrls():
             event.setDropAction(QtCore.Qt.CopyAction)
diff --git a/openlp/plugins/images/imageplugin.py b/openlp/plugins/images/imageplugin.py
index 380d3823d..54f9eaf8f 100644
--- a/openlp/plugins/images/imageplugin.py
+++ b/openlp/plugins/images/imageplugin.py
@@ -83,6 +83,9 @@ class ImagePlugin(Plugin):
     def upgrade_settings(self, settings):
         """
         Upgrade the settings of this plugin.
+
+        ``settings``
+            The Settings object containing the old settings.
         """
         files_from_config = settings.get_files_from_config(self)
         if len(files_from_config) > 0: