diff --git a/language/oop5/abstract.xml b/language/oop5/abstract.xml
index 25a242fe69..8c054f5ee2 100644
--- a/language/oop5/abstract.xml
+++ b/language/oop5/abstract.xml
@@ -18,9 +18,9 @@
    <link linkend="language.oop5.visibility">visibility</link>. For example,
    if the abstract method is defined as protected, the function implementation
    must be defined as either protected or public, but not private. Furthermore
-   the signatures of the methods must match, i.e. type hints and optional
-   arguments must be the same. The last restriction also applies to constructors
-   as of PHP 5.4. Before 5.4 constructor signatures could differ.
+   the signatures of the methods must match, i.e. the type hints and the number
+   of required arguments must be the same. This also applies to constructors as
+   of PHP 5.4. Before 5.4 constructor signatures could differ.
   </para>
 
   <example>
diff --git a/language/oop5/changelog.xml b/language/oop5/changelog.xml
index 551a5cc9a3..4ff6d1a1c7 100644
--- a/language/oop5/changelog.xml
+++ b/language/oop5/changelog.xml
@@ -19,8 +19,8 @@
      <row>
       <entry>5.4.0</entry>
       <entry>
-       Changed: If an abstract class defines a signature for the constructor
-       it will now be enforced.
+       Changed: If an <link linkend="language.oop5.abstract">abstract</link> class
+       defines a signature for the constructor it will now be enforced.
       </entry>
      </row>
      <row>