diff --git a/lib/simple_form/form_builder.rb b/lib/simple_form/form_builder.rb
index 20a99a4b..9062c49d 100644
--- a/lib/simple_form/form_builder.rb
+++ b/lib/simple_form/form_builder.rb
@@ -599,7 +599,11 @@ def file_method?(attribute_name)
 
     def find_attribute_column(attribute_name)
       if @object.respond_to?(:type_for_attribute) && @object.has_attribute?(attribute_name)
-        @object.type_for_attribute(attribute_name.to_s)
+        detected_type = @object.type_for_attribute(attribute_name.to_s)
+
+        # Some attributes like ActiveRecord::Encryption::EncryptedAttribute are detected
+        # as different type, in that case we need to use the original type
+        detected_type.respond_to?(:cast_type) ? detected_type.cast_type : detected_type
       elsif @object.respond_to?(:column_for_attribute) && @object.has_attribute?(attribute_name)
         @object.column_for_attribute(attribute_name)
       end