diff --git a/doc/conf.py b/doc/conf.py
index 00fbffab7e9ae8ffbab83776ed043096bb9e1920..b557eb1aa4b4c992628f877fd3f2e2a34670fffc 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -275,6 +275,7 @@ sphinx_gallery_conf = {
     'backreferences_dir': 'tutorial/backreferences',
     # path to your examples scripts
     'examples_dirs': '../examples',
+    'filename_pattern': '/plot_',
     'ignore_pattern': r'__init__\.py',
     # path where to save gallery generated examples
     'gallery_dirs': 'tutorial/auto_examples'}