diff --git a/lib/livebook/notebook/cell.ex b/lib/livebook/notebook/cell.ex
index 97abee013..3a0978bfe 100644
--- a/lib/livebook/notebook/cell.ex
+++ b/lib/livebook/notebook/cell.ex
@@ -4,7 +4,7 @@ defmodule Livebook.Notebook.Cell do
   # Data structure representing a single cell in a notebook.
   #
   # A cell is the smallest unit of work in a notebook.
-  # It primarly consists of text content that the user can edit
+  # It primarily consists of text content that the user can edit
   # and may potentially produce some output (e.g. during code evaluation).
 
   defstruct [:id, :type, :source, :outputs, :metadata]