1 files changed, 7 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/errors.rb b/activerecord/lib/active_record/errors.rb
index e9364aeeef..2ccb1b0702 100644
--- a/activerecord/lib/active_record/errors.rb
+++ b/activerecord/lib/active_record/errors.rb
@@ -217,9 +217,13 @@ module ActiveRecord
   class ImmutableRelation < ActiveRecordError
   end
 
-  # TransactionIsolationError will be raised if: The adapter does not support setting the isolation level;
-  # You are joining an existing open transaction; You are creating a nested (savepoint) transaction; The mysql,
-  # mysql2 and postgresql adapters support setting the transaction isolation level.
+  # TransactionIsolationError will be raised under the following conditions:
+  #
+  # * The adapter does not support setting the isolation level
+  # * You are joining an existing open transaction
+  # * You are creating a nested (savepoint) transaction
+  #
+  # The mysql, mysql2 and postgresql adapters support setting the transaction isolation level.
   class TransactionIsolationError < ActiveRecordError
   end
 end