diff options
| -rw-r--r-- | lib/axlsx.rb | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/axlsx.rb b/lib/axlsx.rb index 20b5cab0..586562f6 100644 --- a/lib/axlsx.rb +++ b/lib/axlsx.rb @@ -136,8 +136,12 @@ module Axlsx # @param [String] str The string to process # @return [String] def self.sanitize(str) - str.delete(CONTROL_CHARS) - str + if str.frozen? + str.delete(CONTROL_CHARS) + else + str.delete!(CONTROL_CHARS) + str + end end # If value is boolean return 1 or 0 |