diff --git a/mysql-test/lib/mtr_process.pl b/mysql-test/lib/mtr_process.pl
index 307cc552b54..9db5c670fce 100644
--- a/mysql-test/lib/mtr_process.pl
+++ b/mysql-test/lib/mtr_process.pl
@@ -25,7 +25,7 @@ sub sleep_until_file_created ($$$);
 sub mtr_kill_processes ($);
 sub mtr_ping_with_timeout($);
 sub mtr_ping_port ($);
-sub mtr_kill_process ($$$$);
+sub mtr_kill_process ($$$);
 
 # static in C
 sub spawn_impl ($$$$$$$$);
@@ -933,17 +933,16 @@ sub mtr_kill_processes ($) {
   {
     foreach my $sig (15, 9)
     {
-      last if mtr_kill_process($pid, $sig, 10, 1);
+      last if mtr_kill_process($pid, $sig, 10);
     }
   }
 }
 
 
-sub mtr_kill_process ($$$$) {
+sub mtr_kill_process ($$$) {
   my $pid= shift;
   my $signal= shift;
-  my $retries= shift;
-  my $timeout= shift;
+  my $timeout= shift; # Seconds to wait for process
   my $max_loop= $timeout*10; # Sleeping 0.1 between each kill attempt
 
   while (1)
@@ -952,7 +951,7 @@ sub mtr_kill_process ($$$$) {
 
     last unless kill (0, $pid) and $max_loop--;
 
-    mtr_verbose("Sleep 0.1 second waiting for processes to die");
+    mtr_verbose("Sleep 0.1 second waiting for processes $pid to die");
 
     select(undef, undef, undef, 0.1);
   }
diff --git a/mysql-test/mysql-test-run.pl b/mysql-test/mysql-test-run.pl
index ddd86eb2e86..499dc8ace1c 100755
--- a/mysql-test/mysql-test-run.pl
+++ b/mysql-test/mysql-test-run.pl
@@ -3407,7 +3407,7 @@ sub im_stop($) {
 
   # Try graceful shutdown.
 
-  mtr_kill_process($instance_manager->{'pid'}, 'TERM', 10, 1);
+  mtr_kill_process($instance_manager->{'pid'}, 'TERM', 10);
 
   # Check that all processes died.
 
@@ -3433,10 +3433,10 @@ sub im_stop($) {
 
   unless ($clean_shutdown)
   {
-    mtr_kill_process($instance_manager->{'angel_pid'}, 'KILL', 10, 1)
+    mtr_kill_process($instance_manager->{'angel_pid'}, 'KILL', 10)
       if defined $instance_manager->{'angel_pid'};
     
-    mtr_kill_process($instance_manager->{'pid'}, 'KILL', 10, 1);
+    mtr_kill_process($instance_manager->{'pid'}, 'KILL', 10);
 
     # Shutdown managed mysqld-processes. Some of them may be nonguarded, so IM
     # will not stop them on shutdown. So, we should firstly try to end them