diff --git a/nbs/23_tutorial.vision.ipynb b/nbs/23_tutorial.vision.ipynb
index 0fdccd97cf..782c0eb5fd 100644
--- a/nbs/23_tutorial.vision.ipynb
+++ b/nbs/23_tutorial.vision.ipynb
@@ -1360,7 +1360,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "And like before, we can check where the model did its worse:"
+    "And like before, we can check where the model did its worst:"
    ]
   },
   {