diff --git a/reference/mysql/functions/mysql-real-escape-string.xml b/reference/mysql/functions/mysql-real-escape-string.xml
index 50fada2d39..1bc10ec92d 100644
--- a/reference/mysql/functions/mysql-real-escape-string.xml
+++ b/reference/mysql/functions/mysql-real-escape-string.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.18 $ -->
+<!-- $Revision: 1.19 $ -->
 <!-- splitted from ./en/functions/mysql.xml, last change in rev 1.100 -->
   <refentry id="function.mysql-real-escape-string">
    <refnamediv>
@@ -128,7 +128,7 @@ function quote_smart($value)
         $value = stripslashes($value);
     }
     // Quote if not integer
-    if (!is_int($value)) {
+    if (!is_numeric($value)) {
         $value = "'" . mysql_real_escape_string($value) . "'";
     }
     return $value;