diff --git a/app/models/experiment.rb b/app/models/experiment.rb
index 3df1cfc85..334a2b626 100644
--- a/app/models/experiment.rb
+++ b/app/models/experiment.rb
@@ -761,8 +761,6 @@ class Experiment < ApplicationRecord
     workflows = []
     dg.to_undirected.each_connected_component { |w| workflows <<  w }
 
-    # Retrieve maximum allowed module group name
-    max_length = (MyModuleGroup.validators_on(:name).select { |v| v.class == ActiveModel::Validations::LengthValidator }).first.options[:maximum]
     # For each workflow, generate new names
     new_index = 1
     wf_names = []
@@ -788,16 +786,16 @@ class Experiment < ApplicationRecord
           name = I18n.t("my_module_groups.new.name", index: new_index)
           new_index += 1
         end
-      elsif name.length > max_length
+      elsif name.length > Constants::NAME_MAX_LENGTH
         # If length is too long, shorten it
-        name = name[0..(max_length + cut_index)] + suffix
+        name = name[0..(Constants::NAME_MAX_LENGTH + cut_index)] + suffix
       end
 
       wf_names << name
     end
 
     # Remove any existing module groups from modules
-    unless MyModuleGroup.destroy_all(:id => group_ids.to_a)
+    unless MyModuleGroup.where(id: group_ids.to_a).destroy_all
       raise ActiveRecord::ActiveRecordError
     end
 
diff --git a/app/models/my_module.rb b/app/models/my_module.rb
index 2cd0112aa..820add1f6 100644
--- a/app/models/my_module.rb
+++ b/app/models/my_module.rb
@@ -135,10 +135,10 @@ class MyModule < ApplicationRecord
     MyModule.transaction do
       archived = super
       # Unassociate all samples from module.
-      archived = SampleMyModule.destroy_all(:my_module => self) if archived
+      archived = SampleMyModule.where(my_module: self).destroy_all if archived
       # Remove all connection between modules.
-      archived = Connection.delete_all(:input_id => id) if archived
-      archived = Connection.delete_all(:output_id => id) if archived
+      archived = Connection.where(input_id: id).delete_all if archived
+      archived = Connection.where(output_id: id).delete_all if archived
       unless archived
         raise ActiveRecord::Rollback
       end