diff --git a/tests/functions.inc b/tests/functions.inc
index 67a593a..88719e1 100644
--- a/tests/functions.inc
+++ b/tests/functions.inc
@@ -1,6 +1,6 @@
 <?php
 
-srand(((int)(double)microtime()*1000000));
+srand(((int)(float)microtime()*1000000));
 
 function out_table($table_name)
 {