diff --git a/tests/support/server.tcl b/tests/support/server.tcl
index edcbbcc5..9f92ce31 100644
--- a/tests/support/server.tcl
+++ b/tests/support/server.tcl
@@ -236,7 +236,7 @@ proc start_server {options {code undefined}} {
     
     # find out the pid
     while {![info exists pid]} {
-        regexp {\[(\d+)\]} [exec cat $stdout] _ pid
+        regexp {PID:\s(\d+)} [exec cat $stdout] _ pid
         after 100
     }