diff --git a/language/operators.xml b/language/operators.xml
index fff23afa3c..621f780fc5 100644
--- a/language/operators.xml
+++ b/language/operators.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.73 $ -->
+<!-- $Revision: 1.74 $ -->
  <chapter id="language.operators">
   <title>Operators</title>
   <simpara>
@@ -375,6 +375,12 @@ echo "hallo" ^ "hello"; // Outputs the ascii values #0 #4 #0 #0 #0
      </tbody>
     </tgroup>
    </table>
+   <warning>
+    <para>
+     Don't right shift for more than 32 bits on 32 bits systems. Don't left shift
+     in case it results to number longer than 32 bits.
+    </para>
+   </warning>
   </sect1>
 
   <sect1 id="language.operators.comparison">