diff --git a/book/forms.rst b/book/forms.rst
index f2738655ea2..e5a6990aaa4 100644
--- a/book/forms.rst
+++ b/book/forms.rst
@@ -1168,7 +1168,7 @@ Defining your Forms as Services
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Your form type might have some external dependencies. You can define your form
-type as a service, and inject inject all dependencies you need.
+type as a service, and inject all dependencies you need.
 
 .. note::