diff --git a/Library/Homebrew/cmd/test-bot.rb b/Library/Homebrew/cmd/test-bot.rb
index f710e14dfa..88191b5bc2 100644
--- a/Library/Homebrew/cmd/test-bot.rb
+++ b/Library/Homebrew/cmd/test-bot.rb
@@ -823,7 +823,7 @@ module Homebrew
 
           if step.has_output?
             # Remove invalid XML CData characters from step output.
-            output = step.output.delete("\000\a\b\e\f\x1f")
+            output = step.output.delete("\000\a\b\e\f\x2\x1f")
 
             if output.bytesize > BYTES_IN_1_MEGABYTE
               output = "truncated output to 1MB:\n" \