diff --git a/internal/system/box.go b/internal/system/box.go
index 8e3230d..d34b46e 100644
--- a/internal/system/box.go
+++ b/internal/system/box.go
@@ -523,11 +523,17 @@ func (this *box) recursiveReApply () {
 	// style
 	hierarchyStyleNonce := this.getStyleNonce()
 	if this.lastStyleNonce != hierarchyStyleNonce {
+		// remove old style
 		this.lastStyleNonce = hierarchyStyleNonce
 		if this.styleCookie != nil {
 			this.styleCookie.Close()
+			this.styleCookie = nil
+		}
+
+		// apply new one
+		if style := this.getStyle(); style != nil {
+			this.styleCookie = style.Apply(this.outer)
 		}
-		this.styleCookie = this.getStyle().Apply(this.outer)
 		this.on.styleChange.Broadcast()
 	}