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-rw-r--r--guides/source/testing.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/guides/source/testing.md b/guides/source/testing.md
index 50115607c9..edf4813d74 100644
--- a/guides/source/testing.md
+++ b/guides/source/testing.md
@@ -534,7 +534,7 @@ instance variable:
```ruby
# setting a HTTP Header
-@request.headers["Accepts"] = "text/plain, text/html"
+@request.headers["Accept"] = "text/plain, text/html"
get :index # simulate the request with custom header
# setting a CGI variable