diff --git a/doc/source/conf.py b/doc/source/conf.py
index 951a6d4043786..8ab1c8c2f3428 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -427,7 +427,7 @@
 
 
 ipython_warning_is_error = False
-ipython_exec_lines = [
+ipython_execlines = [
     "import numpy as np",
     "import pandas as pd",
     # This ensures correct rendering on system with console encoding != utf8