diff --git a/roles/xmpp_server/molecule/default/tests/test_optional.py b/roles/xmpp_server/molecule/default/tests/test_optional.py
index 9b4012eaf7f6ed84f21b506921a09abe7825daec..abfd7c6d423c58d3f7cb4f454cb6992c6d76a401 100644
--- a/roles/xmpp_server/molecule/default/tests/test_optional.py
+++ b/roles/xmpp_server/molecule/default/tests/test_optional.py
@@ -22,14 +22,14 @@ def test_prosody_tls_files(host):
         assert tls_file.user == 'root'
         assert tls_file.group == 'prosody'
         assert tls_file.mode == 0o640
-        assert tls_file.content == open("tests/data/x509/parameters-optional_xmpp.key.pem", "r").read().rstrip()
+        assert tls_file.content_string == open("tests/data/x509/parameters-optional_xmpp.key.pem", "r").read().rstrip()
 
         tls_file = host.file('/etc/ssl/certs/%s_xmpp.pem' % hostname)
         assert tls_file.is_file
         assert tls_file.user == 'root'
         assert tls_file.group == 'root'
         assert tls_file.mode == 0o644
-        assert tls_file.content == open("tests/data/x509/parameters-optional_xmpp.cert.pem", "r").read().rstrip()
+        assert tls_file.content_string == open("tests/data/x509/parameters-optional_xmpp.cert.pem", "r").read().rstrip()
 
 
 def test_certificate_validity_check_configuration(host):
@@ -45,7 +45,7 @@ def test_certificate_validity_check_configuration(host):
     assert config.user == 'root'
     assert config.group == 'root'
     assert config.mode == 0o644
-    assert config.content == "/etc/ssl/certs/%s_xmpp.pem" % hostname
+    assert config.content_string == "/etc/ssl/certs/%s_xmpp.pem" % hostname
 
 
 def test_prosody_configuration_file_content(host):
@@ -59,26 +59,26 @@ def test_prosody_configuration_file_content(host):
 
         config = host.file('/etc/prosody/prosody.cfg.lua')
 
-        assert "admins = { \"jane.doe@domain2\", \"mick.doe@domain3\",  }" in config.content
-        assert "key = \"/etc/ssl/private/%s_xmpp.key\";" % hostname in config.content
-        assert "certificate = \"/etc/ssl/certs/%s_xmpp.pem\";" % hostname in config.content
-        assert "ldap_server = \"ldap-server\"" in config.content
-        assert "ldap_rootdn = \"cn=prosody,ou=services,dc=local\"" in config.content
-        assert "ldap_password = \"prosodypassword\"" in config.content
-        assert "ldap_filter = \"(&(mail=$user@$host)(memberOf=cn=xmpp,ou=groups,dc=local))\"" in config.content
-        assert "ldap_base = \"ou=people,dc=local\"" in config.content
+        assert "admins = { \"jane.doe@domain2\", \"mick.doe@domain3\",  }" in config.content_string
+        assert "key = \"/etc/ssl/private/%s_xmpp.key\";" % hostname in config.content_string
+        assert "certificate = \"/etc/ssl/certs/%s_xmpp.pem\";" % hostname in config.content_string
+        assert "ldap_server = \"ldap-server\"" in config.content_string
+        assert "ldap_rootdn = \"cn=prosody,ou=services,dc=local\"" in config.content_string
+        assert "ldap_password = \"prosodypassword\"" in config.content_string
+        assert "ldap_filter = \"(&(mail=$user@$host)(memberOf=cn=xmpp,ou=groups,dc=local))\"" in config.content_string
+        assert "ldap_base = \"ou=people,dc=local\"" in config.content_string
 
         assert """VirtualHost "domain2"
 Component "conference.domain2" "muc"
   restrict_room_creation = "local"
 Component "proxy.domain2" "proxy65"
-  proxy65_acl = { "domain2" }""" in config.content
+  proxy65_acl = { "domain2" }""" in config.content_string
 
         assert """VirtualHost "domain3"
 Component "conference.domain3" "muc"
   restrict_room_creation = "local"
 Component "proxy.domain3" "proxy65"
-  proxy65_acl = { "domain3" }""" in config.content
+  proxy65_acl = { "domain3" }""" in config.content_string
 
 
 def test_correct_prosody_package_installed(host):