diff --git a/bigchaindb/common/exceptions.py b/bigchaindb/common/exceptions.py
index 4dc5ea8b..f7d617f0 100644
--- a/bigchaindb/common/exceptions.py
+++ b/bigchaindb/common/exceptions.py
@@ -87,4 +87,4 @@ class AssetIdMismatch(Exception):
 
 
 class AmountError(Exception):
-    """Raise when there is a problem with output amounts"""
+    """Raised when there is a problem with a transaction's output amounts"""