diff --git a/fsl/__init__.py b/fsl/__init__.py
index 848803d38e7ac200581f85561a83ef2c3bd697b9..a2b718f2732b05598e8471e0cb11c422fec9a919 100644
--- a/fsl/__init__.py
+++ b/fsl/__init__.py
@@ -342,7 +342,7 @@ def fslDirWarning(toolName, fslEnvActive):
 
     if haveGui:
         import wx
-        from fsl.utils.fsldirdlg import FSLDirDialog
+        from fsl.utils.dialog import FSLDirDialog
 
         def warn():
             dlg = FSLDirDialog(None, toolName)
diff --git a/fsl/utils/dialog.py b/fsl/utils/dialog.py
index 38a8bfbebcc44c47f0f6302d50cd3ae716a8c9aa..29969e071a14192f35a8ebc96d7d1eac26d1c2e1 100644
--- a/fsl/utils/dialog.py
+++ b/fsl/utils/dialog.py
@@ -351,3 +351,81 @@ class TextEditDialog(wx.Dialog):
 
     def GetText(self):
         return self.__textEdit.GetValue()
+
+
+class FSLDirDialog(wx.Dialog):
+
+    def __init__(self, parent, toolName):
+
+        wx.Dialog.__init__(self, parent, title=strings.titles[self])
+
+        self.__fsldir  = None
+        self.__icon    = wx.StaticBitmap(self)
+        self.__message = wx.StaticText(  self, style=wx.ALIGN_CENTRE)
+        self.__locate  = wx.Button(      self, id=wx.ID_OK)
+        self.__skip    = wx.Button(      self, id=wx.ID_CANCEL)
+
+        icon = wx.ArtProvider.GetMessageBoxIcon(wx.ICON_EXCLAMATION)
+        bmp  = wx.EmptyBitmap(icon.GetWidth(), icon.GetHeight())
+        bmp.CopyFromIcon(icon)
+
+        self.__icon.SetBitmap(bmp)
+        self.__message.SetLabel(
+            strings.messages[self, 'FSLDirNotSet'].format(toolName))
+        self.__locate .SetLabel(strings.labels[self, 'locate'])
+        self.__skip   .SetLabel(strings.labels[self, 'skip'])
+
+        self.__skip  .Bind(wx.EVT_BUTTON, self.__onSkip)
+        self.__locate.Bind(wx.EVT_BUTTON, self.__onLocate)
+
+        self.__sizer       = wx.BoxSizer(wx.VERTICAL)
+        self.__labelSizer  = wx.BoxSizer(wx.HORIZONTAL)
+        self.__buttonSizer = wx.BoxSizer(wx.HORIZONTAL)
+
+        self.__labelSizer.Add(self.__icon, flag=wx.ALL | wx.CENTRE,
+                              border=20)
+        self.__labelSizer.Add(self.__message,
+                              flag=wx.ALL | wx.CENTRE,
+                              proportion=1,
+                              border=20)
+
+        self.__buttonSizer.AddStretchSpacer()
+        self.__buttonSizer.Add(self.__locate,
+                               flag=wx.ALL | wx.CENTRE,
+                               border=10,
+                               proportion=1)
+        self.__buttonSizer.Add(self.__skip,
+                               flag=wx.ALL | wx.CENTRE,
+                               border=10,
+                               proportion=1)
+        self.__buttonSizer.Add((20, -1))
+
+        self.__sizer.Add(self.__labelSizer,  flag=wx.EXPAND, proportion=1)
+        self.__sizer.Add(self.__buttonSizer, flag=wx.EXPAND)
+        self.__sizer.Add((-1, 20))
+
+        self.SetSizer(self.__sizer)
+        self.Fit()
+
+        
+    def GetFSLDir(self):
+        return self.__fsldir
+ 
+
+    def __onSkip(self, ev):
+        self.EndModal(wx.ID_CANCEL)
+
+
+    def __onLocate(self, ev):
+
+        dlg = wx.DirDialog(
+            self,
+            message=strings.messages[self, 'selectFSLDir'],
+            style=wx.DD_DEFAULT_STYLE | wx.DD_DIR_MUST_EXIST)
+
+        if dlg.ShowModal() != wx.ID_OK:
+            self.EndModal(wx.ID_CANCEL)
+
+        self.__fsldir = dlg.GetPath()
+ 
+        self.EndModal(wx.ID_OK)
diff --git a/fsl/utils/fsldirdlg.py b/fsl/utils/fsldirdlg.py
deleted file mode 100644
index 86fe646d3a54c451ed94c149037391783c180537..0000000000000000000000000000000000000000
--- a/fsl/utils/fsldirdlg.py
+++ /dev/null
@@ -1,95 +0,0 @@
-#!/usr/bin/env python
-#
-# fsldirdlg.py 
-# 
-#
-# Author: Paul McCarthy <pauldmccarthy@gmail.com>
-#
-"""
-This module defines a dialog which can be used, when the ``$FSLDIR``
-environment variable is not set, to prompt the user to identify the
-FSL installation location.
-"""
-
-
-import wx
-
-import fsl.data.strings as strings
-
-
-class FSLDirDialog(wx.Dialog):
-
-    def __init__(self, parent, toolName):
-
-        wx.Dialog.__init__(self, parent, title=strings.titles[self])
-
-        self.__fsldir  = None
-        self.__icon    = wx.StaticBitmap(self)
-        self.__message = wx.StaticText(  self, style=wx.ALIGN_CENTRE)
-        self.__locate  = wx.Button(      self, id=wx.ID_OK)
-        self.__skip    = wx.Button(      self, id=wx.ID_CANCEL)
-
-        icon = wx.ArtProvider.GetMessageBoxIcon(wx.ICON_EXCLAMATION)
-        bmp  = wx.EmptyBitmap(icon.GetWidth(), icon.GetHeight())
-        bmp.CopyFromIcon(icon)
-
-        self.__icon.SetBitmap(bmp)
-        self.__message.SetLabel(
-            strings.messages[self, 'FSLDirNotSet'].format(toolName))
-        self.__locate .SetLabel(strings.labels[self, 'locate'])
-        self.__skip   .SetLabel(strings.labels[self, 'skip'])
-
-        self.__skip  .Bind(wx.EVT_BUTTON, self.__onSkip)
-        self.__locate.Bind(wx.EVT_BUTTON, self.__onLocate)
-
-        self.__sizer       = wx.BoxSizer(wx.VERTICAL)
-        self.__labelSizer  = wx.BoxSizer(wx.HORIZONTAL)
-        self.__buttonSizer = wx.BoxSizer(wx.HORIZONTAL)
-
-        self.__labelSizer.Add(self.__icon, flag=wx.ALL | wx.CENTRE,
-                              border=20)
-        self.__labelSizer.Add(self.__message,
-                              flag=wx.ALL | wx.CENTRE,
-                              proportion=1,
-                              border=20)
-
-        self.__buttonSizer.AddStretchSpacer()
-        self.__buttonSizer.Add(self.__locate,
-                               flag=wx.ALL | wx.CENTRE,
-                               border=10,
-                               proportion=1)
-        self.__buttonSizer.Add(self.__skip,
-                               flag=wx.ALL | wx.CENTRE,
-                               border=10,
-                               proportion=1)
-        self.__buttonSizer.Add((20, -1))
-
-        self.__sizer.Add(self.__labelSizer,  flag=wx.EXPAND, proportion=1)
-        self.__sizer.Add(self.__buttonSizer, flag=wx.EXPAND)
-        self.__sizer.Add((-1, 20))
-
-        self.SetSizer(self.__sizer)
-        self.Fit()
-
-        
-    def GetFSLDir(self):
-        return self.__fsldir
- 
-
-    def __onSkip(self, ev):
-        self.EndModal(wx.ID_CANCEL)
-
-
-    def __onLocate(self, ev):
-
-        dlg = wx.DirDialog(
-            self,
-            message=strings.messages[self, 'selectFSLDir'],
-            style=wx.DD_DEFAULT_STYLE | wx.DD_DIR_MUST_EXIST)
-
-        if dlg.ShowModal() != wx.ID_OK:
-            self.EndModal(wx.ID_CANCEL)
-
-        self.__fsldir = dlg.GetPath()
- 
-        self.EndModal(wx.ID_OK)