diff --git a/ml3/2_4_1_Exercise.ipynb b/ml3/2_4_1_Exercise.ipynb
index 96e458a..aedea07 100644
--- a/ml3/2_4_1_Exercise.ipynb
+++ b/ml3/2_4_1_Exercise.ipynb
@@ -215,7 +215,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    Following the classification on the spiral is done with several classifiers. We can see the performance on each class (each spiral), and their decision surfaces."
+    "Following the classification on the spiral is done with several classifiers. We can see the performance on each class (each spiral), and their decision surfaces."
    ]
   },
   {