diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index b1f11590bdc..e91ee751727 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -236,16 +236,21 @@ function dol_getprefix()
  *
  * 	@param	string	$relpath	Relative path to file (Ie: mydir/myfile, ../myfile, ...)
  * 	@param	string	$classname	Class name
- *  @return int					false if include fails.
+ *  @return bool
  */
 function dol_include_once($relpath, $classname='')
 {
-	global $conf,$langs,$user,$mysoc;   // Other global var must be retreived with $GLOBALS['var']
+	$fullpath = dol_buildpath($relpath);
+
+	if (!file_exists($fullpath)) {
+		dol_syslog('functions::dol_include_once Tried to load unexisting file: '.$relpath, LOG_ERR);
+		return false;
+	}
 
 	if (! empty($classname) && ! class_exists($classname)) {
-		return @include dol_buildpath($relpath);			// Remove @ to find error into php log file if you have problems
+		return include $fullpath;
 	} else {
-		return @include_once dol_buildpath($relpath);		// Remove @ to find error into php log file if you have problems
+		return include_once $fullpath;
 	}
 }