diff --git a/kibot/config_reader.py b/kibot/config_reader.py
index 37683bcd..620863a5 100644
--- a/kibot/config_reader.py
+++ b/kibot/config_reader.py
@@ -346,9 +346,9 @@ class CfgYamlReader(object):
             elif k == 'import':
                 outputs.extend(self._parse_import(v, fstream.name))
             elif k == 'variants':
-                RegOutput.set_variants(self._parse_variants(v))
+                RegOutput.add_variants(self._parse_variants(v))
             elif k == 'filters':
-                RegOutput.set_filters(self._parse_filters(v))
+                RegOutput.add_filters(self._parse_filters(v))
             elif k == 'outputs':
                 outputs.extend(self._parse_outputs(v))
             else:
diff --git a/kibot/registrable.py b/kibot/registrable.py
index a6670ea7..7776ac64 100644
--- a/kibot/registrable.py
+++ b/kibot/registrable.py
@@ -45,10 +45,6 @@ class RegOutput(Optionable, Registrable):
     def __init__(self):
         super().__init__()
 
-    @staticmethod
-    def set_variants(variants):
-        RegOutput._def_variants = variants
-
     @staticmethod
     def add_variants(variants):
         RegOutput._def_variants.update(variants)
@@ -61,10 +57,6 @@ class RegOutput(Optionable, Registrable):
     def get_variant(name):
         return RegOutput._def_variants[name]
 
-    @staticmethod
-    def set_filters(filters):
-        RegOutput._def_filters = filters
-
     @staticmethod
     def add_filters(filters):
         RegOutput._def_filters.update(filters)