diff --git a/solventmapcreator/clusteringanalysis/dendrogramplotting.py b/solventmapcreator/clusteringanalysis/dendrogramplotting.py
index f0165ad90320fba8620fed39761bf9813dd1c0c9..74e289ff4b65258dfcba62a77ffbce4dd19db6a2 100644
--- a/solventmapcreator/clusteringanalysis/dendrogramplotting.py
+++ b/solventmapcreator/clusteringanalysis/dendrogramplotting.py
@@ -29,7 +29,7 @@ def create_and_write_dendogram(linkage_matrix, labels, filename_stem, **kwargs):
     return 0
 
 def create_outputfilename(filename_stem, fileformat):
-    """This creates a
+    """This creates a filename from the stem and file format.
     """
     return plottinginput.create_output_filename_from_stem(filename_stem, fileformat)