diff --git a/tardis/io/util.py b/tardis/io/util.py
index cdbd3b54e60..fb3ce0ffce2 100644
--- a/tardis/io/util.py
+++ b/tardis/io/util.py
@@ -167,7 +167,7 @@ def check_equality(item1, item2):
         return True
 
 
-class HDFWriterMixin(object):
+class HDFWriter(object):
 
     @staticmethod
     def to_hdf_util(path_or_buf, path, elements, complevel=9, complib='blosc'):
diff --git a/tardis/model/base.py b/tardis/model/base.py
index eda7363c135..f35306e53a7 100644
--- a/tardis/model/base.py
+++ b/tardis/model/base.py
@@ -6,7 +6,7 @@
 
 from tardis.util import quantity_linspace, element_symbol2atomic_number
 from tardis.io.model_reader import read_density_file, read_abundances_file
-from tardis.io.util import HDFWriterMixin
+from tardis.io.util import HDFWriter as HDFWriterMixin
 from density import HomologousDensity
 
 logger = logging.getLogger(__name__)
diff --git a/tardis/model/density.py b/tardis/model/density.py
index a7676a6d5c6..4bad6e5abeb 100644
--- a/tardis/model/density.py
+++ b/tardis/model/density.py
@@ -1,7 +1,7 @@
 import numpy as np
 
 from tardis.util import quantity_linspace
-from tardis.io.util import HDFWriterMixin
+from tardis.io.util import HDFWriter as HDFWriterMixin
 
 class HomologousDensity(HDFWriterMixin):
     """A class that holds an initial density and time