diff --git a/docs/gallery/plot_external_resources.py b/docs/gallery/plot_external_resources.py
index 792e4d3b9..6896af1b3 100644
--- a/docs/gallery/plot_external_resources.py
+++ b/docs/gallery/plot_external_resources.py
@@ -88,7 +88,7 @@
 # Creating an instance of the HERD class
 # ----------------------------------------------------
 
-# sphinx_gallery_thumbnail_path = 'figures/gallery_thumbnail_HERD.png'
+# sphinx_gallery_thumbnail_path = 'figures/gallery_thumbnail_externalresources.png'
 from hdmf.common import HERD
 from hdmf.common import DynamicTable, VectorData
 from hdmf import Container, HERDManager