diff --git a/ethosu/vela/operation.py b/ethosu/vela/operation.py
index 710511c..6e5b482 100644
--- a/ethosu/vela/operation.py
+++ b/ethosu/vela/operation.py
@@ -314,7 +314,7 @@
 
 class Operation:
     """Class representing a Neural Network operation. Has a name, a type,
-input and output tensors, as well as an attribute dictionary."""
+    input and output tensors, as well as an attribute dictionary."""
 
     __slots__ = (
         "type",