diff --git a/designer-base/src/main/java/com/fr/design/mainframe/JTemplate.java b/designer-base/src/main/java/com/fr/design/mainframe/JTemplate.java
index 159bcbe282..6bf3d466ee 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/JTemplate.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/JTemplate.java
@@ -2049,8 +2049,10 @@ public abstract class JTemplate<T extends BaseBook, U extends BaseUndoState<?>>
             themeAttrMark = new TemplateThemeAttrMark();
             getTarget().addAttrMark(themeAttrMark);
         }
-        themeAttrMark.setName(theme.getName());
-        themeAttrMark.setDark(theme.isDark());
+        if (theme != null) {
+            themeAttrMark.setName(theme.getName());
+            themeAttrMark.setDark(theme.isDark());
+        }
     }
 
     public String getTemplateOpenFailedTip() {