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-rw-r--r--lib/axlsx/workbook/worksheet/page_set_up_pr.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/axlsx/workbook/worksheet/page_set_up_pr.rb b/lib/axlsx/workbook/worksheet/page_set_up_pr.rb
index 819c5fa7..d1c62c9e 100644
--- a/lib/axlsx/workbook/worksheet/page_set_up_pr.rb
+++ b/lib/axlsx/workbook/worksheet/page_set_up_pr.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module Axlsx
# Page setup properties of the worksheet
# This class name is not a typo, its spec.