diff --git a/cadoles/eole/plugins/modules/instance.py b/cadoles/eole/plugins/modules/instance.py
index 7a7a5e4..69cabb4 100644
--- a/cadoles/eole/plugins/modules/instance.py
+++ b/cadoles/eole/plugins/modules/instance.py
@@ -68,6 +68,18 @@ import re
 ansi_escape = re.compile(r'\x1B(?:[@-Z\\-_]|\[[0-?]*[ -/]*[@-~])')
 
 
+def yml_params_to_unicode(param):
+    def convert_param(param):
+        if isinstance(param, str):
+            return param.decode('utf-8')
+        if isinstance(param, list):
+            return [convert_param(p) for p in param]
+        if isinstance(param, dict):
+            return {convert_param(key): convert_param(value) for key,value in param.items()}
+        return param
+    return convert_param(param)
+
+
 class ExpectationCollection:
     def __init__(self):
         self.expectations_lookup = {}
@@ -160,6 +172,8 @@ class Expectation:
             return False
         context.reverse()
         for index, c in enumerate(self.context[len(self.context)-2::-1]):
+            if sys.version_info < (3,):
+                c = c.decode('utf-8')
             if c != ansi_escape.sub('', context[index]):
                 return False
         return True
@@ -289,6 +303,7 @@ def run_module():
         changed=False,
         module='',
         msg='',
+        debug='',
     )
 
     # the AnsibleModule object will be our abstraction working with Ansible
@@ -354,7 +369,7 @@ def run_module():
         result['msg'] += "Module {} instanciated".format(result['module'])
         module.exit_json(**result)
     except Exception as err:
-        result['msg'] += err
+        result['msg'] += str(err)
         result['changed'] = True
         module.fail_json(**result)