diff --git a/roles/php_website/molecule/default/tests/test_parameters_optional.py b/roles/php_website/molecule/default/tests/test_parameters_optional.py
index a8e622338ba2dae17b09ae758be2915c957b4d43..aca89c8220004a58e992ed279ebec48ef6bc366d 100644
--- a/roles/php_website/molecule/default/tests/test_parameters_optional.py
+++ b/roles/php_website/molecule/default/tests/test_parameters_optional.py
@@ -103,7 +103,7 @@ def test_forward_file(host):
         assert config.user == 'root'
         assert config.group == 'web-parameters-optional_local'
         assert config.mode == 0o640
-        assert config.content == "user\n"
+        assert config.content_string == "user\n"
 
 
 def test_mail_forwarding(host):
@@ -125,11 +125,11 @@ def test_mail_forwarding(host):
 
         # First extract message ID of forwarded mail.
         pattern = r"%s: to=<web-parameters-optional_local@localhost>.*status=sent \(forwarded as ([^)]*)\)" % message_id
-        message_id = re.search(pattern, mail_log.content).group(1)
+        message_id = re.search(pattern, mail_log.content_string).group(1)
 
         # Now try to determine where the forward ended-up at.
         pattern = "%s: to=<user@%s>, orig_to=<web-parameters-optional_local@localhost>.*status=sent" % (message_id, hostname)
-        assert re.search(pattern, mail_log.content) is not None
+        assert re.search(pattern, mail_log.content_string) is not None
 
 
 def test_installed_packages(host):
@@ -154,14 +154,14 @@ def test_nginx_tls_files(host):
         assert tls_file.user == 'root'
         assert tls_file.group == 'root'
         assert tls_file.mode == 0o640
-        assert tls_file.content == open("tests/data/x509/parameters-optional.local_https.key.pem", "r").read().rstrip()
+        assert tls_file.content_string == open("tests/data/x509/parameters-optional.local_https.key.pem", "r").read().rstrip()
 
         tls_file = host.file('/etc/ssl/certs/parameters-optional.local_https.pem')
         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.local_https.cert.pem", "r").read().rstrip()
+        assert tls_file.content_string == open("tests/data/x509/parameters-optional.local_https.cert.pem", "r").read().rstrip()
 
 
 def test_certificate_validity_check_configuration(host):
@@ -175,7 +175,7 @@ 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/parameters-optional.local_https.pem"
+    assert config.content_string == "/etc/ssl/certs/parameters-optional.local_https.pem"
 
 
 def test_vhost_file(host):