diff --git a/lib/submissions/generate_result_attachments.rb b/lib/submissions/generate_result_attachments.rb
index 98d67c79..c221d38a 100644
--- a/lib/submissions/generate_result_attachments.rb
+++ b/lib/submissions/generate_result_attachments.rb
@@ -40,6 +40,8 @@ module Submissions
 
     RTL_REGEXP = TextUtils::RTL_REGEXP
 
+    TEXT_ALIGNS = %w[left center right justify].freeze
+    TEXT_VALIGNS = %w[top center bottom].freeze
     TEXT_LEFT_MARGIN = 1
     TEXT_TOP_MARGIN = 1
     MAX_PAGE_ROTATE = 50
@@ -280,10 +282,10 @@ module Submissions
           value = field['default_value'] if field['type'] == 'heading'
           value = field['default_value'] if field['type'] == 'strikethrough' && value.nil? && field['conditions'].blank?
 
-          text_align = field.dig('preferences', 'align').to_s.to_sym.presence ||
+          text_align = field.dig('preferences', 'align').to_s.presence_in(TEXT_ALIGNS)&.to_sym ||
                        (value.to_s.match?(RTL_REGEXP) ? :right : :left)
 
-          text_valign = (field.dig('preferences', 'valign').to_s.presence || 'center').to_sym
+          text_valign = (field.dig('preferences', 'valign').to_s.presence_in(TEXT_VALIGNS) || 'center').to_sym
 
           layouter = HexaPDF::Layout::TextLayouter.new(text_valign:, text_align:, font:, font_size:)
 
@@ -597,7 +599,7 @@ module Submissions
             )
           when ->(type) { type == 'cells' && !area['cell_w'].to_f.zero? }
             cell_width = area['cell_w'] * width
-            cell_valign = field.dig('preferences', 'valign').to_s.presence || 'center'
+            cell_valign = field.dig('preferences', 'valign').to_s.presence_in(TEXT_VALIGNS) || 'center'
             cell_layouter = cell_layouters[cell_valign]
 
             if (mask = field.dig('preferences', 'mask').presence)