diff --git a/htdocs/core/class/evalmath.class.php b/htdocs/core/class/evalmath.class.php
index ccd495bb623..2259cfde06f 100644
--- a/htdocs/core/class/evalmath.class.php
+++ b/htdocs/core/class/evalmath.class.php
@@ -368,7 +368,7 @@ class EvalMath
 	/**
 	 * evaluate postfix notation
 	 *
-	 * @param string $tokens      	Expression
+	 * @param array $tokens      	Expression
 	 * @param array $vars       	Array
 	 * @return string 				Output
 	 */