diff --git a/pylot/core/readdata/__init__.py b/pylot/core/read/__init__.py
similarity index 100%
rename from pylot/core/readdata/__init__.py
rename to pylot/core/read/__init__.py
diff --git a/pylot/core/readdata/types.py b/pylot/core/read/data.py
similarity index 98%
rename from pylot/core/readdata/types.py
rename to pylot/core/read/data.py
index b4b9dbec..ae4a9932 100644
--- a/pylot/core/readdata/types.py
+++ b/pylot/core/read/data.py
@@ -65,6 +65,8 @@ class SeiscompDataStructure(object):
     def modifiyFields(self, **kwargs):
         if kwargs and isinstance(kwargs, dict):
             for key, value in kwargs.iteritems():
+                key = str(key)
+                value = str(value)
                 try:
                     if key in self.__sdsFields.keys():
                         self.__sdsFields[key] = str(value)
diff --git a/pylot/core/readinput/types.py b/pylot/core/read/inputs.py
similarity index 99%
rename from pylot/core/readinput/types.py
rename to pylot/core/read/inputs.py
index 54aadcbc..473f91d7 100644
--- a/pylot/core/readinput/types.py
+++ b/pylot/core/read/inputs.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+
 class AutoPickParameter(object):
     '''
     AutoPickParameters is a parameter type object capable to read and/or write
diff --git a/pylot/core/readinput/__init__.py b/pylot/core/readinput/__init__.py
deleted file mode 100644
index e69de29b..00000000