diff --git a/yaltik_dsl/__manifest__.py b/yaltik_dsl/__manifest__.py
index e388fa8..e059173 100644
--- a/yaltik_dsl/__manifest__.py
+++ b/yaltik_dsl/__manifest__.py
@@ -19,7 +19,7 @@
     'name': 'Yaltik Odoo DSL base module and fns',
     'summary': 'Yaltik Odoo Domain Specific Language base module and functions',
     'description': """ Yaltik Odoo Domain Specific Language base module and functions """,
-    'version': '10.0.0.3.1',
+    'version': '10.0.0.3.2',
     'category': 'Yaltik',
     'author': 'Fabien Bourgeois',
     'license': 'AGPL-3',
diff --git a/yaltik_dsl/test_xml_base.coco b/yaltik_dsl/test_xml_base.coco
index 648edcb..6442bed 100644
--- a/yaltik_dsl/test_xml_base.coco
+++ b/yaltik_dsl/test_xml_base.coco
@@ -108,7 +108,7 @@ class TestXMLBase(unittest.TestCase):
       ('/badpath' |> xmlw) `self.assertEquals` None
       ('/bad.ext' |> xmlw) `self.assertEquals` None
 
-      xmlw(__file__)
+      xmlw(__file__) # Default to pretty
       filepath = __file__.replace('.py', '_views.xml')
       with open(filepath, 'r') as output_file:
           output_xml = output_file.read()
@@ -116,7 +116,17 @@ class TestXMLBase(unittest.TestCase):
           '<root>' `self.assertIn` output_xml
           '<child1 attr="value"/>' `self.assertIn` output_xml
           '<child2>Some text</child2>' `self.assertIn` output_xml
-          unlink(filepath)
+      unlink(filepath)
+
+      xmlw(__file__, pretty=False)
+      filepath = __file__.replace('.py', '_views.xml')
+      with open(filepath, 'r') as output_file:
+          output_xml = output_file.read()
+          '<?xml version' `self.assertNotIn` output_xml
+          '<root>' `self.assertIn` output_xml
+          '<child1 attr="value" />' `self.assertIn` output_xml
+          '<child2>Some text</child2>' `self.assertIn` output_xml
+      unlink(filepath)
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/yaltik_dsl/test_xml_base.py b/yaltik_dsl/test_xml_base.py
index 572379d..c977586 100644
--- a/yaltik_dsl/test_xml_base.py
+++ b/yaltik_dsl/test_xml_base.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
-# __coconut_hash__ = 0x84c101a5
+# __coconut_hash__ = 0x470897d2
 
 # Compiled with Coconut version 1.4.3 [Ernest Scribbler]
 
@@ -132,7 +132,7 @@ class TestXMLBase(unittest.TestCase):
         (self.assertEquals)(((xmlw)('/badpath')), None)
         (self.assertEquals)(((xmlw)('/bad.ext')), None)
 
-        xmlw(__file__)
+        xmlw(__file__)  # Default to pretty
         filepath = __file__.replace('.py', '_views.xml')
         with open(filepath, 'r') as output_file:
             output_xml = output_file.read()
@@ -140,7 +140,17 @@ class TestXMLBase(unittest.TestCase):
             (self.assertIn)('<root>', output_xml)
             (self.assertIn)('<child1 attr="value"/>', output_xml)
             (self.assertIn)('<child2>Some text</child2>', output_xml)
-            unlink(filepath)
+        unlink(filepath)
+
+        xmlw(__file__, pretty=False)
+        filepath = __file__.replace('.py', '_views.xml')
+        with open(filepath, 'r') as output_file:
+            output_xml = output_file.read()
+            (self.assertNotIn)('<?xml version', output_xml)
+            (self.assertIn)('<root>', output_xml)
+            (self.assertIn)('<child1 attr="value" />', output_xml)
+            (self.assertIn)('<child2>Some text</child2>', output_xml)
+        unlink(filepath)
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/yaltik_dsl/xml_base.coco b/yaltik_dsl/xml_base.coco
index 801309b..0ba5652 100644
--- a/yaltik_dsl/xml_base.coco
+++ b/yaltik_dsl/xml_base.coco
@@ -73,11 +73,13 @@ def xmln(tag: Text = '',
       raise TypeError('Invalid arguments for xmln')
 
 
-def xml_write(filepath, tree):
+def xml_write(filepath: Text, tree: ET.Element, pretty: bool = True) -> None:
     """ Write XML file according to filename and given tree """
     if '.py' |> filepath.endswith:  # if .pyc, no need to generate XML
-        output_xml = tree |> ET.tostring |> minidom.parseString |> .toprettyxml(indent='    ')
+        output_xml = tree |> ET.tostring
+        if pretty:
+            output_xml = output_xml |> minidom.parseString |> .toprettyxml(indent='    ')
         output_path = filepath |> path.abspath |> path.dirname
-        fpath = [output_path, filepath |> path.basename] |> '/'.join |> .replace('.py', '_views.xml')
-        with open(fpath, 'w') as output_file:
-            output_file.write(output_xml)
+        output_path = [output_path, filepath |> path.basename] |> '/'.join |> .replace('.py', '_views.xml')
+        with open(output_path, 'w') as output_file:
+            output_file.write(unicode(output_xml))
diff --git a/yaltik_dsl/xml_base.py b/yaltik_dsl/xml_base.py
index d950a7f..4d7aa28 100644
--- a/yaltik_dsl/xml_base.py
+++ b/yaltik_dsl/xml_base.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
-# __coconut_hash__ = 0x178765c5
+# __coconut_hash__ = 0x4c21227d
 
 # Compiled with Coconut version 1.4.3 [Ernest Scribbler]
 
@@ -134,11 +134,17 @@ def xmln(tag='',  # type: Text
         raise TypeError('Invalid arguments for xmln')
 
 
-def xml_write(filepath, tree):
+def xml_write(filepath,  # type: Text
+     tree,  # type: ET.Element
+     pretty=True  # type: bool
+    ):
+# type: (...) -> None
     """ Write XML file according to filename and given tree """
     if (filepath.endswith)('.py'):  # if .pyc, no need to generate XML
-        output_xml = ((minidom.parseString)((ET.tostring)(tree))).toprettyxml(indent='    ')
+        output_xml = (ET.tostring)(tree)
+        if pretty:
+            output_xml = ((minidom.parseString)(output_xml)).toprettyxml(indent='    ')
         output_path = (path.dirname)((path.abspath)(filepath))
-        fpath = (('/'.join)([output_path, (path.basename)(filepath)])).replace('.py', '_views.xml')
-        with open(fpath, 'w') as output_file:
-            output_file.write(output_xml)
+        output_path = (('/'.join)([output_path, (path.basename)(filepath)])).replace('.py', '_views.xml')
+        with open(output_path, 'w') as output_file:
+            output_file.write(unicode(output_xml))