diff --git a/src/main/java/de/doubleslash/keeptime/view/ExternalProjectsMapController.java b/src/main/java/de/doubleslash/keeptime/view/ExternalProjectsMapController.java
index 62d6bb26..16531370 100644
--- a/src/main/java/de/doubleslash/keeptime/view/ExternalProjectsMapController.java
+++ b/src/main/java/de/doubleslash/keeptime/view/ExternalProjectsMapController.java
@@ -253,6 +253,8 @@ protected void updateItem(HeimatTask item, boolean empty) {
                setText(null);
             } else {
                setText(item.taskHolderName() + " - " + item.name());
+               String toolTipText = item.name();
+               setTooltip(new Tooltip(toolTipText));
             }
          }
       });