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-rw-r--r--lib/rack/request.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/rack/request.rb b/lib/rack/request.rb
index 3cb27651..54ea86c4 100644
--- a/lib/rack/request.rb
+++ b/lib/rack/request.rb
@@ -358,7 +358,7 @@ module Rack
 
             # Fix for Safari Ajax postings that always append \0
             # form_vars.sub!(/\0\z/, '') # performance replacement:
-            form_vars.slice!(-1) if form_vars[-1] == ?\0
+            form_vars.slice!(-1) if form_vars.end_with?("\0")
 
             set_header RACK_REQUEST_FORM_VARS, form_vars
             set_header RACK_REQUEST_FORM_HASH, parse_query(form_vars, '&')