diff --git a/lib/attr_encrypted/adapters/active_record.rb b/lib/attr_encrypted/adapters/active_record.rb
index 3111cbd5..6f25b8fb 100644
--- a/lib/attr_encrypted/adapters/active_record.rb
+++ b/lib/attr_encrypted/adapters/active_record.rb
@@ -29,8 +29,8 @@ class << self
             def perform_attribute_assignment(method, new_attributes, *args)
               return if new_attributes.blank?
 
-              send method, new_attributes.reject { |k, _|  self.class.encrypted_attributes.key?(k.to_sym) }, *args
-              send method, new_attributes.reject { |k, _| !self.class.encrypted_attributes.key?(k.to_sym) }, *args
+              send method, new_attributes.reject { |k, _|  self&.class&.encrypted_attributes&.key?(k.to_sym) }, *args
+              send method, new_attributes.reject { |k, _| !self&.class&.encrypted_attributes&.key?(k.to_sym) }, *args
             end
             private :perform_attribute_assignment