diff --git a/uk/ac/sanger/artemis/components/ProjectProperty.java b/uk/ac/sanger/artemis/components/ProjectProperty.java
index 267094cf0b3bde84dcbe0a3589ead22866427850..74e75101f01b8c5012b4855e85f507b66494316a 100644
--- a/uk/ac/sanger/artemis/components/ProjectProperty.java
+++ b/uk/ac/sanger/artemis/components/ProjectProperty.java
@@ -754,6 +754,7 @@ public class ProjectProperty extends JFrame
       {
         System.getProperties().remove("bam");
         System.getProperties().remove("chado");
+        System.getProperties().remove("userplot");
       }
       catch(Exception e){ e.printStackTrace(); }