diff --git a/.travis.yml b/.travis.yml
index f102f46a6..dab6e7b8f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ dist: trusty
 
 python:
   - "2.7"
-  - "3.4"
+  - "3.5"
 
 git:
   submodules: false
diff --git a/pywps/configuration.py b/pywps/configuration.py
index cad668a8f..9e6d7ab3f 100755
--- a/pywps/configuration.py
+++ b/pywps/configuration.py
@@ -90,7 +90,7 @@ def load_configuration(cfgfiles=None):
     config.set('server', 'encoding', 'utf-8')
     config.set('server', 'language', 'en-US')
     config.set('server', 'url', 'http://localhost/wps')
-    config.set('server', 'maxoperations', '30')
+    config.set('server', 'maxprocesses', '30')
     config.set('server', 'maxsingleinputsize', '1mb')
     config.set('server', 'maxrequestsize', '3mb')
     config.set('server', 'temp_path', tempfile.gettempdir())
diff --git a/pywps/inout/inputs.py b/pywps/inout/inputs.py
index eae5a5802..b894aa307 100644
--- a/pywps/inout/inputs.py
+++ b/pywps/inout/inputs.py
@@ -362,7 +362,7 @@ def _execute_xml_data(self):
         """Return Data node
         """
         doc = WPS.Data()
-        literal_doc = WPS.LiteralData(self.data)
+        literal_doc = WPS.LiteralData(str(self.data))
 
         if self.data_type:
             literal_doc.attrib['dataType'] = self.data_type
diff --git a/tox.ini b/tox.ini
index 36d07aec5..e48692def 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=py27,py34
+envlist=py27,py35
 
 [testenv:py27]
 deps = flufl.enum