diff --git a/centos_ci_build b/centos_ci_build
index c2ffbd7..3d81147 100755
--- a/centos_ci_build
+++ b/centos_ci_build
@@ -3,4 +3,4 @@
 
 yum -y update
 uname -a
-SKIP_QA_HARNESS=1 ./runtests.sh p_exim
+SKIP_QA_HARNESS=1 ./runtests.sh
diff --git a/tests/p_exim/20_exim_mta_helo-test.sh b/tests/p_exim/20_exim_mta_helo-test.sh
index 8b463c9..2b714af 100755
--- a/tests/p_exim/20_exim_mta_helo-test.sh
+++ b/tests/p_exim/20_exim_mta_helo-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -x
+#!/bin/bash
 # Author: Christoph Galuschka <tigalch@tigalch.org>
 
 t_Log "Running $0 - exim can accept and deliver local email."
diff --git a/tests/p_exim/30_exim_mta_ehlo-test.sh b/tests/p_exim/30_exim_mta_ehlo-test.sh
index bb32f1d..22ac9f3 100755
--- a/tests/p_exim/30_exim_mta_ehlo-test.sh
+++ b/tests/p_exim/30_exim_mta_ehlo-test.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -x
+#!/bin/bash
 # Author: Christoph Galuschka <tigalch@tigalch.org>
 
 t_Log "Running $0 - exim can accept and deliver local email."
diff --git a/tests/p_exim/_helper_exim_ehlo.expect b/tests/p_exim/_helper_exim_ehlo.expect
index 18aef9b..9250885 100755
--- a/tests/p_exim/_helper_exim_ehlo.expect
+++ b/tests/p_exim/_helper_exim_ehlo.expect
@@ -1,5 +1,5 @@
 #!/usr/bin/expect -f
-# Author: Christoph Galuschka <christoph.galuschka@chello.at>
+# Author: Christoph Galuschka <tigalch@tigalch.org>
 
 set timeout 1
 spawn telnet localhost 25
diff --git a/tests/p_exim/_helper_exim_helo.expect b/tests/p_exim/_helper_exim_helo.expect
index a81ff1f..941c55c 100755
--- a/tests/p_exim/_helper_exim_helo.expect
+++ b/tests/p_exim/_helper_exim_helo.expect
@@ -1,5 +1,5 @@
 #!/usr/bin/expect -f
-# Author: Christoph Galuschka <christoph.galuschka@chello.at>
+# Author: Christoph Galuschka <tigalch@tigalch.org>
 
 set timeout 1
 spawn telnet localhost 25