diff --git a/internal/system/containerbox.go b/internal/system/containerbox.go
index 304192c..1657366 100644
--- a/internal/system/containerbox.go
+++ b/internal/system/containerbox.go
@@ -187,7 +187,7 @@ func (this *containerBox) setAttr (attr tomo.Attr, user bool) {
 
 func (this *containerBox) recommendedHeight (width int) int {
 	layout := this.attrLayout.Value().Layout
-	if layout == nil || this.attrOverflow.Value().Y {
+	if layout == nil || !this.attrOverflow.Value().Y {
 		return this.minSize.Value().Y
 	} else {
 		return layout.RecommendedHeight(this.layoutHints(), this.boxQuerier(), width) +
@@ -197,7 +197,7 @@ func (this *containerBox) recommendedHeight (width int) int {
 
 func (this *containerBox) recommendedWidth (height int) int {
 	layout := this.attrLayout.Value().Layout
-	if layout == nil || this.attrOverflow.Value().X {
+	if layout == nil || !this.attrOverflow.Value().X {
 		return this.minSize.Value().X
 	} else {
 		return layout.RecommendedWidth(this.layoutHints(), this.boxQuerier(), height) +