Index: /trunk/test/unit/org/openstreetmap/josm/gui/layer/GpxLayerTest.java
===================================================================
--- /trunk/test/unit/org/openstreetmap/josm/gui/layer/GpxLayerTest.java	(revision 17843)
+++ /trunk/test/unit/org/openstreetmap/josm/gui/layer/GpxLayerTest.java	(revision 17844)
@@ -222,5 +222,5 @@
     void testFormatTimespan() {
         Instant[] timespan = {Instant.parse("2021-03-01T17:53:16Z"), Instant.parse("2021-04-03T08:19:19Z")};
-        assertEquals("2021-03-01T17:53:16 \u2013 2021-04-03T08:19:19 (32 days 14 h)", GpxLayer.formatTimespan(timespan));
+        assertEquals("2021-03-01 17:53:16 \u2013 2021-04-03 08:19:19 (32 days 14 h)", GpxLayer.formatTimespan(timespan));
     }