diff --git a/app/lib/email_processor.rb b/app/lib/email_processor.rb
index 5363403d..d399b371 100644
--- a/app/lib/email_processor.rb
+++ b/app/lib/email_processor.rb
@@ -324,7 +324,7 @@ def clean_message(body)
 
   def to_utf8(content)
     return unless content.present?
-    content = content&.gsub!("\0", '') # remove null characters
+    content = content.gsub!("\0", '') # remove null characters
 
     begin
       detection = CharlockHolmes::EncodingDetector.detect(content)