diff --git a/act-rules-format/act-rules-format.bs b/act-rules-format/act-rules-format.bs
index 7d4cc98..108fb15 100644
--- a/act-rules-format/act-rules-format.bs
+++ b/act-rules-format/act-rules-format.bs
@@ -725,7 +725,7 @@ Definitions {#definitions}
 
   <dt><dfn>Implementation</dfn><dt>
   <dd>
-    <p>An accessibility test methodology or test tool, containing a set of [=checks=] which can be used to determine (non-)conformance of [=accessibility requirements=].
+    <p>An accessibility test methodology or test tool, containing a set of [=checks=] which can be used to determine (non-)conformance of [=accessibility requirements=].</p>
   </dd>
 
   <dt><dfn>Outcome</dfn></dt>