diff --git a/src/digest-tree-scene.cpp b/src/digest-tree-scene.cpp
index a68c63f..a38658d 100644
--- a/src/digest-tree-scene.cpp
+++ b/src/digest-tree-scene.cpp
@@ -154,7 +154,7 @@
     it.next();
     DisplayUserPtr p = it.value();
     if (p != DisplayUserNullPtr) {
-      prefixList << "- " + p->getPrefix();
+      prefixList << p->getPrefix();
     }
   }
   return prefixList;