diff --git a/src/pretix/static/pretixcontrol/js/ui/checkinrules/viz-node.vue b/src/pretix/static/pretixcontrol/js/ui/checkinrules/viz-node.vue
index 94b81af99b..2bc60b5917 100644
--- a/src/pretix/static/pretixcontrol/js/ui/checkinrules/viz-node.vue
+++ b/src/pretix/static/pretixcontrol/js/ui/checkinrules/viz-node.vue
@@ -145,7 +145,7 @@
       },
       tf (val) {
         const format = $("body").attr("data-timeformat")
-        return moment(val).format(format)
+        return moment(val, "HH:mm:ss").format(format)
       }
     },
   }