diff --git a/README.rst b/README.rst
index d7063ba..431be7c 100644
--- a/README.rst
+++ b/README.rst
@@ -41,11 +41,13 @@
 will tell Tempest where to find the various OpenStack services and
 other testing behavior switches.
 
-The easiest way to create a configuration file is to copy the sample
-one in the ``etc/`` directory ::
+The easiest way to create a configuration file is to generate a sample
+in the ``etc/`` directory ::
 
     $> cd $TEMPEST_ROOT_DIR
-    $> cp etc/tempest.conf.sample etc/tempest.conf
+    $> oslo-config-generator --config-file \
+        tools/config/config-generator.tempest.conf \
+        --output-file etc/tempest.conf
 
 After that, open up the ``etc/tempest.conf`` file and edit the
 configuration variables to match valid data in your environment.
diff --git a/tempest/common/glance_http.py b/tempest/common/glance_http.py
index 4be3da1..868a3e9 100644
--- a/tempest/common/glance_http.py
+++ b/tempest/common/glance_http.py
@@ -330,7 +330,7 @@
             try:
                 self.context.load_verify_locations(self.ca_certs)
             except Exception as e:
-                msg = 'Unable to load CA from "%s"' % (self.ca_certs, e)
+                msg = 'Unable to load CA from "%s" %s' % (self.ca_certs, e)
                 raise exc.SSLConfigurationError(msg)
         else:
             self.context.set_default_verify_paths()