diff --git a/docs/conf.py b/docs/conf.py
index 2fcd0096..d1cdf2e0 100755
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -235,7 +235,7 @@
     version=str(tutorials_repo.head.commit), docname="{{ docname|e }}"
 )
 nbsphinx_thumbnails = {
-    "tutorials/notebooks/1_cell_segmentation": "_static/tutorials/1_cell_segmentation.png",
+    "tutorials/notebooks/cell_segmentation": "_static/tutorials/1_cell_segmentation.png",
     "tutorials/notebooks/2_cluster_digitization": "_static/tutorials/2_cluster_digitization.png",
     "tutorials/notebooks/3_cci": "_static/tutorials/3_cci.png",
     "tutorials/notebooks/4_alignment": "_static/tutorials/4_alignment.png",