diff --git a/testing/functional_tests_assertions.rst b/testing/functional_tests_assertions.rst
index edf1a6bb679..29e4b1e5e3a 100644
--- a/testing/functional_tests_assertions.rst
+++ b/testing/functional_tests_assertions.rst
@@ -84,7 +84,7 @@ Mailer
 - ``assertQueuedEmailCount()``
 - ``assertEmailIsQueued()``
 - ``assertEmailIsNotQueued()``
-- ``assertEmailAttachementCount()``
+- ``assertEmailAttachmentCount()``
 - ``assertEmailTextBodyContains()``
 - ``assertEmailTextBodyNotContains()``
 - ``assertEmailHtmlBodyContains()``