diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java
index b0393598d..693f3e217 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorController.java
@@ -198,6 +198,8 @@ public class DecoratorController {
 
     private Background getBackground() {
         EnumBackgroundImage imageType = config().getBackgroundImageType();
+        if (imageType == null)
+            imageType = EnumBackgroundImage.DEFAULT;
 
         Image image = null;
         switch (imageType) {