Index: Document.java
===================================================================
RCS file: /home/cvspublic/jdom/src/java/org/jdom/Document.java,v
retrieving revision 1.45
diff -c -r1.45 Document.java
*** Document.java	2001/10/07 19:07:52	1.45
--- Document.java	2001/11/25 01:47:07
***************
*** 267,272 ****
--- 267,276 ----
              docType.setDocument(this);
          }
  
+         if (this.docType != null) {
+             this.docType.setDocument(null);
+         }
+ 
          this.docType = docType;
          return this;
      }