diff --git a/language/operators.xml b/language/operators.xml
index 84fd972664..d59e6688ec 100644
--- a/language/operators.xml
+++ b/language/operators.xml
@@ -1575,6 +1575,8 @@ echo "Should be 4: " . $a . "<br />\n";
     (ASCII value of <literal>'Z'</literal> is 90, ASCII value of <literal>'['</literal> is 91).
     Note that character variables can be incremented but not decremented and
     even so only plain ASCII characters (a-z and A-Z) are supported.
+    Incrementing/decrementing other character variables has no effect, the 
+    original string is unchanged.
     <example>
      <title>Arithmetic Operations on Character Variables</title>
      <programlisting role="php">