diff --git a/docs/conf.py b/docs/conf.py
index 06e2b8be..9d8de753 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -73,7 +73,7 @@
 ]
 
 nb_execution_timeout = 500
-execution_in_temp=True
+nb_execution_in_temp=True
 
 
 # use type hints