Index: trunk/src/org/openstreetmap/josm/gui/layer/geoimage/RemoteEntry.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/layer/geoimage/RemoteEntry.java	(revision 18805)
+++ trunk/src/org/openstreetmap/josm/gui/layer/geoimage/RemoteEntry.java	(revision 18806)
@@ -220,5 +220,5 @@
     @Override
     public Instant getLastModified() {
-        if (this.getImageURI().getScheme().contains("file:")) {
+        if ("file".equals(this.getImageURI().getScheme())) {
             try {
                 return Files.getLastModifiedTime(Paths.get(this.getImageURI())).toInstant();