diff --git a/lib/webrat/core/session.rb b/lib/webrat/core/session.rb
index 13f3f90..42614b4 100644
--- a/lib/webrat/core/session.rb
+++ b/lib/webrat/core/session.rb
@@ -143,7 +143,7 @@ For example:
     end
 
     def redirect? #:nodoc:
-      response_code / 100 == 3
+      (response_code / 100).to_i == 3
     end
 
     def internal_redirect?