diff --git a/src/backend/config.c b/src/backend/config.c
index 43a20af41..2e724be08 100644
--- a/src/backend/config.c
+++ b/src/backend/config.c
@@ -50,7 +50,7 @@ LUMIERA_ERROR_DEFINE (CONFIG_SYNTAX, "syntax error in configfile");
 LUMIERA_ERROR_DEFINE (CONFIG_SYNTAX_KEY, "syntax error in key");
 LUMIERA_ERROR_DEFINE (CONFIG_SYNTAX_VALUE, "syntax error in value");
 LUMIERA_ERROR_DEFINE (CONFIG_NO_ENTRY, "no configuration entry");
-LUMIERA_ERROR_DEFINE (CONFIG_DEFAULT, "illegal default value");
+
 
 /**
  *  defaults for the configuraton system itself
@@ -248,9 +248,8 @@ lumiera_config_set (const char* key, const char* delim_value)
   LumieraConfigitem item = lumiera_config_lookup_item_find (&lumiera_global_config->keys, key);
   if (item && item->parent != &lumiera_global_config->defaults)
     {
-      TODO ("a user writeable file?");
+      TODO ("is a user writeable file?");
       TODO ("       replace delim_value");
-      //LumieraConfigitem
       lumiera_configitem_set_value (item, delim_value);
     }
   else
@@ -279,8 +278,6 @@ lumiera_config_set (const char* key, const char* delim_value)
         }
     }
 
-  TODO ("return item?");
-
   return item;
 }
 
diff --git a/src/backend/config.h b/src/backend/config.h
index d5e1cb058..80f33a6d5 100644
--- a/src/backend/config.h
+++ b/src/backend/config.h
@@ -48,7 +48,7 @@ LUMIERA_ERROR_DECLARE (CONFIG_SYNTAX);
 LUMIERA_ERROR_DECLARE (CONFIG_SYNTAX_KEY);
 LUMIERA_ERROR_DECLARE (CONFIG_SYNTAX_VALUE);
 LUMIERA_ERROR_DECLARE (CONFIG_NO_ENTRY);
-LUMIERA_ERROR_DECLARE (CONFIG_DEFAULT);
+
 
 //TODO: Lumiera header includes//
 #include "backend/config_lookup.h"
@@ -237,6 +237,7 @@ LUMIERA_CONFIG_TYPES
 #undef LUMIERA_CONFIG_TYPE
 
 
+
 // * {{{ lumiera_config_reset(...) }}}
 //  * reset a value by key to the system default values, thus removes a user's configuration line.
 /**