diff --git a/language/functions.xml b/language/functions.xml
index 8f39f34cc0..adc92cfc55 100644
--- a/language/functions.xml
+++ b/language/functions.xml
@@ -366,7 +366,7 @@ Making a bowl of acidophilus raspberry.
     </note>
 
     <para>
-     Type declarations allow functions to specify parameters as certain types.
+     Type declarations allow functions to require that parameters are of a certain type at call time.
      If the given value is of the incorrect type,
      then an error is generated: in PHP 5, this will be a recoverable fatal
      error, while PHP 7 will throw a <classname>TypeError</classname>