diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 3bea3697f52..c23c14aecee 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -3827,7 +3827,7 @@ function dol_nboflines_bis($text,$maxlinesize=0,$charset='UTF-8')
  */
 function dol_microtime_float()
 {
-	return microtime();
+	return microtime(true);
 }
 
 /**