diff --git a/src/widgets/stack.rs b/src/widgets/stack.rs
index 4622e23..acd74a1 100644
--- a/src/widgets/stack.rs
+++ b/src/widgets/stack.rs
@@ -587,7 +587,7 @@ mod tests {
             ConstraintLimit::ClippedAfter(UPx(10)),
             ConstraintLimit::ClippedAfter(UPx(10)),
             &[UPx(3), UPx(3), UPx(3)],
-            UPx(10),
+            UPx(9),
             UPx(1),
         );
     }