diff --git a/app/models/metadata_array.rb b/app/models/metadata_array.rb
index 33b4477..343081c 100644
--- a/app/models/metadata_array.rb
+++ b/app/models/metadata_array.rb
@@ -16,7 +16,7 @@ class MetadataArray < MetadataTemplate
   def sanitize(values)
     values.map do |v|
       if v.is_a? String
-        super(v)
+        super(v).sub(/\.\z/, '')
       else
         v
       end