diff --git a/CHANGES b/CHANGES
index 4bfe8ed..cbab382 100644
--- a/CHANGES
+++ b/CHANGES
@@ -18,6 +18,9 @@ which I feel is ready for day to day use.
 * Support passing kwarg type context to all logging methods (i.e. `wryter.error('Message', k=v)`.
 * Add OOB support (with optional dependencies) for Elasticsearch, Logzio, Syslog and File handlers.
 * Expose handler configuration via env vars.
+* Add many tests
+* Add codeclimate checks
+* Try to avoid exceptions in the logger as much as possible. Instead, display errors or exceptions in the console.
 
 See the docs for more info.
 
diff --git a/wryte.py b/wryte.py
index ea37326..abb2688 100644
--- a/wryte.py
+++ b/wryte.py
@@ -333,8 +333,7 @@ def _assert_level(self, level):
         levels = LEVEL_CONVERSION.keys()
 
         if level.lower() not in levels:
-            self.logger.exception('Level must be one of {0}'.format(
-                levels))
+            self.logger.exception('Level must be one of %s', levels)
             return False
         return True