diff --git a/output/src/space/measure.rs b/output/src/space/measure.rs
index 9ea4765..a894b60 100644
--- a/output/src/space/measure.rs
+++ b/output/src/space/measure.rs
@@ -7,7 +7,7 @@ pub trait HasSize<E: Output> {
         self.size().w()
     }
     fn height (&self) -> usize {
-        self.size().w()
+        self.size().h()
     }
 }