1 files changed, 1 insertions, 1 deletions
diff --git a/lazar.rb b/lazar.rb
index 8d87e24..da243ea 100644
--- a/lazar.rb
+++ b/lazar.rb
@@ -159,7 +159,7 @@ post '/lazar/?' do
     end
     transformer = OpenTox::Algorithm::Transform::Log10.new(transform_acts)
     transform_acts = transformer.values
-    lazar.transform = { :class => transformer.class, :offset => transformer.offset }
+    lazar.transform = { :class => transformer.class.to_s, :offset => transformer.offset }
 
     transform_counts=0
     training_activities.data_entries.each do |compound,entry|