diff --git a/roles/xmpp_server/molecule/default/tests/test_optional.py b/roles/xmpp_server/molecule/default/tests/test_optional.py
index 3ad420b14e2701f7fd67c301f83c3028b39ce69f..9b4012eaf7f6ed84f21b506921a09abe7825daec 100644
--- a/roles/xmpp_server/molecule/default/tests/test_optional.py
+++ b/roles/xmpp_server/molecule/default/tests/test_optional.py
@@ -13,7 +13,7 @@ def test_prosody_tls_files(host):
     correctly.
     """
 
-    hostname = host.run('hostname').stdout
+    hostname = host.run('hostname').stdout.strip()
 
     with host.sudo():
 
@@ -38,7 +38,7 @@ def test_certificate_validity_check_configuration(host):
     correctly.
     """
 
-    hostname = host.run('hostname').stdout
+    hostname = host.run('hostname').stdout.strip()
 
     config = host.file('/etc/check_certificate/%s_xmpp.conf' % hostname)
     assert config.is_file
@@ -53,7 +53,7 @@ def test_prosody_configuration_file_content(host):
     Tests if Prosody configuration file has correct content.
     """
 
-    hostname = host.run('hostname').stdout
+    hostname = host.run('hostname').stdout.strip()
 
     with host.sudo():