diff --git a/crates/border-wars/src/map/hex.rs b/crates/border-wars/src/map/hex.rs
index 5410eff..f94e292 100644
--- a/crates/border-wars/src/map/hex.rs
+++ b/crates/border-wars/src/map/hex.rs
@@ -256,7 +256,7 @@ impl<T: Number> HexPosition<T> {
             size.0
                 * 3f32
                     .sqrt()
-                    .mul_add(T::to_f32(self.0), 3f32.sqrt() / 2.0 * T::to_f32(self.0)),
+                    .mul_add(T::to_f32(self.0), 3f32.sqrt() / 2.0 * T::to_f32(self.1)),
             size.1 * (3.0 / 2.0 * T::to_f32(self.1)),
         )
     }