diff --git a/test/colab_test.sh b/test/colab_test.sh
index 576339c..eec4e28 100644
--- a/test/colab_test.sh
+++ b/test/colab_test.sh
@@ -29,4 +29,4 @@ test_reverse_proxy_gitlab() {
   assertTrue 'Reverse proxy for gitlab' "curl --header 'Host: softwarepublico.dev' http://$integration/gitlab/public/projects | grep -i '<meta.*gitlab.*>'"
 }
 
-. shunit2
+load_shunit2
diff --git a/test/gitlab_test.sh b/test/gitlab_test.sh
index 4ced1ac..834147b 100644
--- a/test/gitlab_test.sh
+++ b/test/gitlab_test.sh
@@ -22,4 +22,4 @@ test_redirects_to_the_correct_host() {
   assertEquals "Location: https://softwarepublico.dev/gitlab/users/sign_in" "$redirect"
 }
 
-. shunit2
+load_shunit2
diff --git a/test/mail_relay_test.sh b/test/mail_relay_test.sh
index 707e042..f64f99d 100644
--- a/test/mail_relay_test.sh
+++ b/test/mail_relay_test.sh
@@ -40,5 +40,5 @@ test_outbound_email_reverseproxy() {
   _test_outbound_email reverseproxy
 }
 
-. shunit2
+load_shunit2
 
diff --git a/test/mailman_api_test.sh b/test/mailman_api_test.sh
index b1bd141..c40ce93 100644
--- a/test/mailman_api_test.sh
+++ b/test/mailman_api_test.sh
@@ -4,5 +4,5 @@ test_mailman_api_running() {
   assertTrue 'mailman running' 'run_on integration pgrep -fa mailman-api'
 }
 
-. shunit2
+load_shunit2
 
diff --git a/test/mailman_test.sh b/test/mailman_test.sh
index 15f3597..ccc330c 100644
--- a/test/mailman_test.sh
+++ b/test/mailman_test.sh
@@ -25,4 +25,4 @@ test_mailman_web_interface() {
   assertEquals "<TITLE>listas.softwarepublico.dev Mailing Lists</TITLE>" "$title"
 }
 
-. shunit2
+load_shunit2
diff --git a/test/postgresql_test.sh b/test/postgresql_test.sh
index a66b860..6885549 100644
--- a/test/postgresql_test.sh
+++ b/test/postgresql_test.sh
@@ -12,5 +12,5 @@ test_gitlab_database_created() {
   assertTrue 'gitlab database created in PostgreSQL' 'run_on database sudo -u postgres -i psql gitlab < /dev/null'
 }
 
-. shunit2
+load_shunit2
 
diff --git a/test/redis_test.sh b/test/redis_test.sh
index 74957b2..b495fbb 100644
--- a/test/redis_test.sh
+++ b/test/redis_test.sh
@@ -8,4 +8,4 @@ test_redis_listens_on_local_network() {
   assertTrue 'redis listening on local network' 'nc -z -w 1 $database 6379'
 }
 
-. shunit2
+load_shunit2
diff --git a/test/reverse_proxy_test.sh b/test/reverse_proxy_test.sh
index f1b63a0..e51c59f 100644
--- a/test/reverse_proxy_test.sh
+++ b/test/reverse_proxy_test.sh
@@ -15,4 +15,4 @@ test_redirect_http_to_mailman() {
   assertEquals "<TITLE>listas.softwarepublico.dev Mailing Lists</TITLE>" "$title"
 }
 
-. shunit2
+load_shunit2
diff --git a/test/test_helper.sh b/test/test_helper.sh
index 046c80f..30aa236 100644
--- a/test/test_helper.sh
+++ b/test/test_helper.sh
@@ -7,4 +7,15 @@ run_on() {
   echo 'export PATH=/vagrant/test/bin:$PATH;' "$@" | ssh -F .ssh_config "$vm"
 }
 
+load_shunit2() {
+  if [ `which shunit2 > /dev/null 2>&1` ]; then
+    . shunit2
+  elif [ -e /usr/share/shunit2/shunit2 ]; then
+    . /usr/share/shunit2/shunit2
+  else
+    echo "Could not find shunit2, please, make sure you have it installed."
+  fi
+}
+
 . $(dirname $0)/ip_helper.sh
+
--
libgit2 0.21.2