diff --git a/internal/system/containerbox.go b/internal/system/containerbox.go
index 1657366..f7103a0 100644
--- a/internal/system/containerbox.go
+++ b/internal/system/containerbox.go
@@ -173,6 +173,7 @@ func (this *containerBox) setAttr (attr tomo.Attr, user bool) {
 	case tomo.AttrOverflow:
 		if this.attrOverflow.Set(attr, user) {
 			this.invalidateLayout()
+			this.invalidateMinimum()
 		}
 		
 	case tomo.AttrLayout: