diff --git a/reference/pgsql/functions/pg-execute.xml b/reference/pgsql/functions/pg-execute.xml
index f230005cea..ae0cc1028f 100644
--- a/reference/pgsql/functions/pg-execute.xml
+++ b/reference/pgsql/functions/pg-execute.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
 <!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.2 -->
 <refentry id="function.pg-execute">
  <refnamediv>
@@ -75,6 +75,11 @@
         in the original prepared query string.  The number of elements in the array
         must match the number of placeholders.
       </para>
+      <warning>
+       <para>
+        Elements are converted to strings by calling this function.
+       </para>
+      </warning>
      </listitem>
     </varlistentry>
    </variablelist>