diff --git a/application/src/test/java/org/opentripplanner/test/support/ResourceLoader.java b/application/src/test/java/org/opentripplanner/test/support/ResourceLoader.java
index 5670a49fab7..523a613913d 100644
--- a/application/src/test/java/org/opentripplanner/test/support/ResourceLoader.java
+++ b/application/src/test/java/org/opentripplanner/test/support/ResourceLoader.java
@@ -46,7 +46,12 @@ public static ResourceLoader of(Object object) {
    */
   public File file(String path) {
     URL resource = url(path);
-    var file = new File(resource.getFile());
+    File file;
+    try {
+      file = new File(new URI(resource.toString()));
+    } catch (URISyntaxException e) {
+      throw new RuntimeException(e);
+    }
     assertTrue(
       file.exists(),
       "File '%s' not found on file system.".formatted(file.getAbsolutePath())