diff --git a/notebooks/signac_301_Aggregation_Tutorial.ipynb b/notebooks/signac_301_Aggregation_Tutorial.ipynb
index bd76daa..172f511 100644
--- a/notebooks/signac_301_Aggregation_Tutorial.ipynb
+++ b/notebooks/signac_301_Aggregation_Tutorial.ipynb
@@ -36,7 +36,7 @@
     "\n",
     "Aggregation allows a **signac-flow** operation to act on multiple jobs, rather than one job at a time.\n",
     "\n",
-    "An aggregate is defined as a subset of the jobs in a **signac** project. Aggregates are generated when a `flow.aggregator` object is applied to the `FlowProject.operation` directive.\n",
+    "An aggregate is defined as a subset of the jobs in a **signac** project. Aggregates are generated when a `flow.aggregator` object is provided to the `FlowProject.operation` decorator.\n",
     "\n",
     "Please refer to the [documentation](https://docs.signac.io/en/latest/aggregation.html) for detailed instructions on how to use aggregation."
    ]