diff --git a/src/ext/java/org/opentripplanner/ext/vehicleparking/hslpark/HslParkUpdater.java b/src/ext/java/org/opentripplanner/ext/vehicleparking/hslpark/HslParkUpdater.java
index 36699aee1af..a921836d907 100644
--- a/src/ext/java/org/opentripplanner/ext/vehicleparking/hslpark/HslParkUpdater.java
+++ b/src/ext/java/org/opentripplanner/ext/vehicleparking/hslpark/HslParkUpdater.java
@@ -60,7 +60,7 @@ public HslParkUpdater(
         parameters.utilizationsUrl(),
         "",
         parkPatchMapper::parseUtilization,
-        null
+        Map.of()
       );
     this.facilitiesFrequencySec = parameters.facilitiesFrequencySec();
   }