diff --git a/hugr-py/src/hugr/ops.py b/hugr-py/src/hugr/ops.py
index cacc55960..ef9f86d91 100644
--- a/hugr-py/src/hugr/ops.py
+++ b/hugr-py/src/hugr/ops.py
@@ -71,7 +71,7 @@ def _sig_port_type(sig: tys.FunctionType, port: InPort | OutPort) -> tys.Type:
 
 @runtime_checkable
 class DataflowOp(Op, Protocol):
-    """Abstract dataflow operation, can be assumed to have a signature and Value
+    """Abstract dataflow operation. Can be assumed to have a signature and Value-
     kind ports.
     """