1 files changed, 5 insertions, 5 deletions
diff --git a/lib/axlsx/stylesheet/styles.rb b/lib/axlsx/stylesheet/styles.rb
index e518d21e..d9c5683a 100644
--- a/lib/axlsx/stylesheet/styles.rb
+++ b/lib/axlsx/stylesheet/styles.rb
@@ -370,7 +370,7 @@ module Axlsx
 
       if options[:border].is_a?(Integer)
         if options[:border] >= borders.size
-          raise ArgumentError, (ERR_INVALID_BORDER_ID % options[:border])
+          raise ArgumentError, format(ERR_INVALID_BORDER_ID, options[:border])
         end
 
         if options[:type] == :dxf
@@ -380,9 +380,9 @@ module Axlsx
         end
       end
 
-      validate_border_hash = ->(val) {
-        if !(val.key?(:style) && val.key?(:color))
-          raise ArgumentError, (ERR_INVALID_BORDER_OPTIONS % options[:border])
+      validate_border_hash = lambda { |val|
+        unless val.key?(:style) && val.key?(:color)
+          raise ArgumentError, format(ERR_INVALID_BORDER_OPTIONS, options[:border])
         end
       }
 
@@ -439,7 +439,7 @@ module Axlsx
           next
         end
 
-        if !edge_b_opts.empty?
+        unless edge_b_opts.empty?
           if base_border_opts.empty?
             validate_border_hash.call(edge_b_opts)
           end