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-rw-r--r--lib/rack/methodoverride.rb6
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/rack/methodoverride.rb b/lib/rack/methodoverride.rb
index 16bf23cf..61cb27fc 100644
--- a/lib/rack/methodoverride.rb
+++ b/lib/rack/methodoverride.rb
@@ -26,7 +26,11 @@ module Rack
       req = Request.new(env)
       method = method_override_param(req) ||
         env[HTTP_METHOD_OVERRIDE_HEADER]
-      method.to_s.upcase
+      begin
+        method.to_s.upcase
+      rescue ArgumentError
+        env["rack.errors"].puts "Invalid string for method"
+      end
     end
 
     private