diff --git a/app/models/err.rb b/app/models/err.rb
index 84193c3..12ad688 100644
--- a/app/models/err.rb
+++ b/app/models/err.rb
@@ -1,6 +1,6 @@
-# An Err is a group of notices that can programatically
-# be determined to be equal. (Errbit groups notices into
-# errs by a notice's fingerprint.)
+# Represents a set of Notices which can be automatically
+# determined to refer to the same Error (Errbit groups
+# notices into errs by a notice's fingerprint.)
 
 class Err
   include Mongoid::Document
diff --git a/app/models/problem.rb b/app/models/problem.rb
index 12f2c0a..ecd9282 100644
--- a/app/models/problem.rb
+++ b/app/models/problem.rb
@@ -1,5 +1,6 @@
-# An Problem is a group of errs that the user
-# has declared to be equal.
+# Represents a single Problem. The problem may have been
+# reported as various Errs, but the user has grouped the
+# Errs together as belonging to the same problem.
 
 class Problem
   include Mongoid::Document
--
libgit2 0.21.2