diff --git a/language/predefined/typeerror.xml b/language/predefined/typeerror.xml
index 67eda95fcb..8a6c7d05e3 100644
--- a/language/predefined/typeerror.xml
+++ b/language/predefined/typeerror.xml
@@ -15,11 +15,14 @@
   <section xml:id="typeerror.intro">
    &reftitle.intro;
    <para>
-    <ooclass><classname>TypeError</classname></ooclass> is thrown when strict
-    typing is enabled and an invalid argument is given to a function.
-    <ooclass><classname>TypeError</classname></ooclass> is also thrown when an
-    invalid number of arguments are passed to a function.
-   </para>
+    There are three scenarios where a
+    <ooclass><classname>TypeError</classname></ooclass> may be thrown. The
+    first is where the argument type being passed to a function does not match
+    its corresponding declared parameter type (strict mode only). The second is
+    where a value being returned from a function does not match the declared
+    function return type (strict mode only, again). The third is where an
+    invalid number of arguments are passed to a built-in PHP function.
+  </para>
   </section>
 <!-- }}} -->