diff --git a/classes/AddressFormat.php b/classes/AddressFormat.php
index f820f112b..586234103 100644
--- a/classes/AddressFormat.php
+++ b/classes/AddressFormat.php
@@ -316,8 +316,8 @@ class AddressFormatCore extends ObjectModel
 
 								// Check if the property exist in both classes
 								if (($totalName == 2) && class_exists($associateName[0]) &&
-									Tools::property_exists($associateName[0], $associateName[1]) &&
-									Tools::property_exists($address, 'id_'.strtolower($associateName[0])))
+									property_exists($associateName[0], $associateName[1]) &&
+									property_exists($address, 'id_'.strtolower($associateName[0])))
 								{
 									$idFieldName = 'id_'.strtolower($associateName[0]);
 
diff --git a/classes/Tools.php b/classes/Tools.php
index b187140f1..e39abf616 100644
--- a/classes/Tools.php
+++ b/classes/Tools.php
@@ -1667,12 +1667,15 @@ FileETag INode MTime Size
 	/**
 	 * Function property_exists does not exist in PHP < 5.1
 	 *
+	 * @deprecated since 1.5.0 (PHP 5.1 required, so property_exists() is now natively supported)
 	 * @param object or class $class
 	 * @param string $property
 	 * @return boolean
 	 */
 	public static function property_exists($class, $property)
 	{
+		Tools::displayAsDeprecated();
+
 		if (function_exists('property_exists'))
 			return property_exists($class, $property);
 
diff --git a/classes/webservice/WebserviceRequest.php b/classes/webservice/WebserviceRequest.php
index 4a4dbd9f2..e924ceed2 100644
--- a/classes/webservice/WebserviceRequest.php
+++ b/classes/webservice/WebserviceRequest.php
@@ -1420,7 +1420,7 @@ class WebserviceRequestCore
 						else
 							$object->$fieldProperties['setter']((string)$attributes->$fieldName);
 					}
-					elseif (Tools::property_exists($object, $sqlId))
+					elseif (property_exists($object, $sqlId))
 						$object->$sqlId = (string)$attributes->$fieldName;
 					else
 						$this->setError(400, 'Parameter "'.$fieldName.'" can\'t be set to the object "'.$this->resourceConfiguration['retrieveData']['className'].'"', 123);
@@ -1431,7 +1431,7 @@ class WebserviceRequestCore
 					$this->setError(400, 'parameter "'.$fieldName.'" required', 41);
 					return false;
 				}
-				elseif ((!isset($fieldProperties['required']) || !$fieldProperties['required']) && Tools::property_exists($object, $sqlId))
+				elseif ((!isset($fieldProperties['required']) || !$fieldProperties['required']) && property_exists($object, $sqlId))
 					$object->$sqlId = null;
 
 				if (isset($fieldProperties['i18n']) && $fieldProperties['i18n'])
diff --git a/install-dev/index.php b/install-dev/index.php
index 780aaae6c..91c748e65 100644
--- a/install-dev/index.php
+++ b/install-dev/index.php
@@ -345,11 +345,11 @@ if ($lm->getIncludeTradFilename())
 		</form>
 		<h3 class="no-margin"><?php echo lang('Did you know?'); ?></h3>
 		<p>
-			<?php 
-			
+			<?php
+
 				$isoForLink = (in_array($lm->getIsoCodeSelectedLang(), array('fr', 'it', 'de', 'en', 'es')) ? $lm->getIsoCodeSelectedLang() : 'en');
 				echo lang('Prestashop and its community offers over 40 different languages for free download at');
-			
+
 			?><br /><a href="http://www.prestashop.com/<?php echo $isoForLink; ?>/downloads/#lang_pack" target="_blank">http://www.prestashop.com/<?php echo $isoForLink; ?>/downloads/#lang_pack</a>
 		</p>
 
@@ -772,9 +772,9 @@ if ($lm->getIncludeTradFilename())
 
 					function getPreinstallXmlLang($object, $field)
 					{
-						if (Tools::property_exists($object, $field.'_'.((int)($_GET['language'])+1)))
+						if (property_exists($object, $field.'_'.((int)($_GET['language'])+1)))
 							return str_replace(array('!|', '|!'), array('<', '>'), trim($object->{$field.'_'.((int)($_GET['language'])+1)}));
-						if (Tools::property_exists($object, $field.'_1'))
+						if (property_exists($object, $field.'_1'))
 							return str_replace(array('!|', '|!'), array('<', '>'), trim($object->{$field.'_1'}));
 						return '';
 					}