diff --git a/gui/src/main/groovy/com/muwire/gui/ResultTreeModel.groovy b/gui/src/main/groovy/com/muwire/gui/ResultTreeModel.groovy
index d84fe672..ffc59d11 100644
--- a/gui/src/main/groovy/com/muwire/gui/ResultTreeModel.groovy
+++ b/gui/src/main/groovy/com/muwire/gui/ResultTreeModel.groovy
@@ -71,8 +71,9 @@ class ResultTreeModel extends DefaultTreeModel {
             Object [] elementData = children.elementData
             int idx = Arrays.binarySearch(elementData, 0, getChildCount(), newChild)
             if (idx >= 0)
-                throw new IllegalStateException("duplicate result inserted?")
-            idx = - idx - 1
+                idx++
+            else
+                idx = - idx - 1
             insert(newChild, idx)
         }