diff --git a/docs/tutorials/regression_penalty.ipynb b/docs/tutorials/regression_penalty.ipynb
index 52d85260..68ba7f06 100644
--- a/docs/tutorials/regression_penalty.ipynb
+++ b/docs/tutorials/regression_penalty.ipynb
@@ -588,7 +588,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Sparse Regrssion\n",
+    "### Sparse Regression\n",
     "\n",
     "In reality, users usually faces a more challenging problem with a much higher $P$ to $N$ ratio with a sparsity specified by the parameter `relevance=0.5` under the simulation process."
    ]