diff --git a/src/main.rs b/src/main.rs
index 30ec89a..a09325d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -12,5 +12,5 @@ use cell::*;
 
 fn main() {
     println!("Hello, world!");
-    let grid = init_grid();
+    let grid = init_grid(None);
 }