diff --git a/lab2/Part2_FaceDetection.ipynb b/lab2/Part2_FaceDetection.ipynb
index c877149c..0b22ad06 100644
--- a/lab2/Part2_FaceDetection.ipynb
+++ b/lab2/Part2_FaceDetection.ipynb
@@ -169,8 +169,8 @@
         "face_images = images[np.where(labels==1)[0]]\n",
         "not_face_images = images[np.where(labels==0)[0]]\n",
         "\n",
-        "idx_face = 19 #@param {type:\"slider\", min:0, max:50, step:1}\n",
-        "idx_not_face = 8 #@param {type:\"slider\", min:0, max:50, step:1}\n",
+        "idx_face = 19 #@param {type:\"slider\", min:0, max:49, step:1}\n",
+        "idx_not_face = 8 #@param {type:\"slider\", min:0, max:49, step:1}\n",
         "\n",
         "plt.figure(figsize=(8,4))\n",
         "plt.subplot(1, 2, 1)\n",