diff --git a/src/board.rs b/src/board.rs
index a85524c..e4ea0b2 100644
--- a/src/board.rs
+++ b/src/board.rs
@@ -37,7 +37,7 @@ impl<T> PosMap<T> {
             panic!("index is out of range");
         }
 
-        unsafe { &self.0.get_unchecked(index) }
+        unsafe { self.0.get_unchecked(index) }
     }
 }