diff --git a/src/common/geometry.rs b/src/common/geometry.rs
index 1fc359b..f4dadcf 100644
--- a/src/common/geometry.rs
+++ b/src/common/geometry.rs
@@ -1,4 +1,4 @@
-#[derive(Hash, PartialEq, Eq)]
+#[derive(Hash, PartialEq, Eq, Debug)]
 pub struct Point3(pub u64, pub u64, pub u64);
 
 impl Point3 {