diff --git a/source/use-cases/hierarchical-aggregation.txt b/source/use-cases/hierarchical-aggregation.txt
index a28508b1156..f67bcda2e86 100644
--- a/source/use-cases/hierarchical-aggregation.txt
+++ b/source/use-cases/hierarchical-aggregation.txt
@@ -217,7 +217,7 @@ operation itself will resemble the following:
 
    last_run = cutoff
 
-The ``cuttoff`` variable allows you to process all events that have
+The ``cutoff`` variable allows you to process all events that have
 occurred since the last run but before 1 minute ago. This allows for
 some delay in logging events. You can safely run this aggregation as
 often as you like, provided that you update the ``last_run`` variable