diff --git a/lib/discourse_data_explorer/data_explorer.rb b/lib/discourse_data_explorer/data_explorer.rb
index fd94ea8..f9843a8 100644
--- a/lib/discourse_data_explorer/data_explorer.rb
+++ b/lib/discourse_data_explorer/data_explorer.rb
@@ -1,9 +1,6 @@
 # frozen_string_literal: true
 
 module ::DiscourseDataExplorer
-  class ValidationError < StandardError
-  end
-
   module DataExplorer
     # Used for ftype calls, see https://www.rubydoc.info/gems/pg/0.17.1/PG%2FResult:ftype
     # and /usr/include/postgresql/server/catalog/pg_type_d.h
diff --git a/lib/discourse_data_explorer/validation_error.rb b/lib/discourse_data_explorer/validation_error.rb
new file mode 100644
index 0000000..ba15df8
--- /dev/null
+++ b/lib/discourse_data_explorer/validation_error.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module ::DiscourseDataExplorer
+  class ValidationError < StandardError
+  end
+end