diff --git a/stress/config.py b/stress/config.py
index 64091cd..ca86ce5 100755
--- a/stress/config.py
+++ b/stress/config.py
@@ -39,15 +39,15 @@
 
     @property
     def nova_logdir(self):
-        """Directory containing log files on the compute nodes"""
+        """Directory containing log files on the compute nodes."""
         return self.get("nova_logdir", None)
 
     @property
     def controller(self):
-        """Controller host"""
+        """Controller host."""
         return self.get("controller", None)
 
     @property
     def max_instances(self):
-        """Maximum number of instances to create during test"""
+        """Maximum number of instances to create during test."""
         return self.get("max_instances", 16)