diff --git a/nn_regression.ipynb b/nn_regression.ipynb
index 5e61603ea302e62579734f9bb31122dd07cbe835..85572c1ae2a4ee2b34f4d012bf53d7f00149e26b 100644
--- a/nn_regression.ipynb
+++ b/nn_regression.ipynb
@@ -52,7 +52,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Side remark: The documentation of Keras at https://keras.io/ refers to the newest version of Keras (>2.4), which only supports Tensorflow (https://www.tensorflow.org/) as a backend. This tutorial (as well as the tutorial on convolutional neural networks) is compatible with versions <=2.3 which allows multiple backends (CNTK, Tensorflow, Theano). There are only slight differences in syntax and you can find archieved documentations at https://github.com/faroit/keras-docs, e.g., for \n",
+    "Side remark: The documentation of Keras at https://keras.io/ refers to the newest version of Keras (>2.4), which only supports Tensorflow (https://www.tensorflow.org/) as a backend. This tutorial (as well as the tutorial on convolutional neural networks) is compatible with versions <=2.3 which allows multiple backends (CNTK, Tensorflow, Theano). There are only slight differences in syntax and you can find archived documentations at https://github.com/faroit/keras-docs, e.g., for \n",
     "version 2.1.5 https://faroit.com/keras-docs/2.1.5/. In both tutorials, we use tensorflow as backend (version <2.0)."
    ]
   },