diff --git a/example02_threaded_raytracing/.lvimrc b/example02_threaded_raytracing/.lvimrc
index 81ba35f..73421f0 100644
--- a/example02_threaded_raytracing/.lvimrc
+++ b/example02_threaded_raytracing/.lvimrc
@@ -1,3 +1,4 @@
+set expandtab
 set tabstop=2
 set softtabstop=2
-set shiftwidth=2
+set shiftwidth=2
\ No newline at end of file