diff --git a/docs/noise/representing_noise.ipynb b/docs/noise/representing_noise.ipynb
index 829eeb2725f..7a40ca8621e 100644
--- a/docs/noise/representing_noise.ipynb
+++ b/docs/noise/representing_noise.ipynb
@@ -526,7 +526,7 @@
     "id": "ec10d57ac6cf"
    },
    "source": [
-    "Avoid using this model except for simple tests, as different gates (particulary `cirq.MeasurementGate`) usually have different error."
+    "Avoid using this model except for simple tests, as different gates (particularly `cirq.MeasurementGate`) usually have different error."
    ]
   },
   {