diff --git a/wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java b/wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java
index 1947e5cd..11578bf6 100644
--- a/wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java
+++ b/wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java
@@ -229,9 +229,6 @@ public class Mindmap {
     }
 
     public void setCreator(@NotNull User creator) {
-        if (creator == null) {
-            throw new IllegalArgumentException("Owner can not be null");
-        }
         this.creator = creator;
     }