diff --git a/roles/web_server/molecule/default/tests/test_mandatory.py b/roles/web_server/molecule/default/tests/test_mandatory.py
index 0b5ae7aff90a952b35cadea0f0c1c7ef40e60f13..6dd360378612801db81d5bf5edaf035d433b8c58 100644
--- a/roles/web_server/molecule/default/tests/test_mandatory.py
+++ b/roles/web_server/molecule/default/tests/test_mandatory.py
@@ -21,14 +21,14 @@ 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/%s_https.key" % hostname, "r").read().rstrip()
+        assert tls_file.content_string == open("tests/data/x509/%s_https.key" % hostname, "r").read().rstrip()
 
         tls_file = host.file('/etc/ssl/certs/%s_https.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/%s_https.pem" % hostname, "r").read().rstrip()
+        assert tls_file.content_string == open("tests/data/x509/%s_https.pem" % hostname, "r").read().rstrip()
 
 
 def test_certificate_validity_check_configuration(host):
@@ -44,7 +44,7 @@ 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_https.pem" % hostname
+    assert config.content_string == "/etc/ssl/certs/%s_https.pem" % hostname
 
 
 def test_tls_configuration(host):