diff --git a/.gitmodules b/.gitmodules
index 79eaa29b..6e01eb75 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "doc/PythonRoboticsPaper"]
-	path = doc/PythonRoboticsPaper
+	path = paper/PythonRoboticsPaper
 	url = https://github.com/AtsushiSakai/PythonRoboticsPaper