Index: /applications/editors/josm/plugins/imagery/src/org/openstreetmap/josm/plugins/imagery/tms/TMSPreferences.java
===================================================================
--- /applications/editors/josm/plugins/imagery/src/org/openstreetmap/josm/plugins/imagery/tms/TMSPreferences.java	(revision 24551)
+++ /applications/editors/josm/plugins/imagery/src/org/openstreetmap/josm/plugins/imagery/tms/TMSPreferences.java	(revision 24552)
@@ -38,5 +38,5 @@
             maxZoomLvl = PROP_MIN_ZOOM_LVL.get();
         }
-        if (ts != null && ts.getMaxZoom() != 0) {
+        if (ts != null && ts.getMaxZoom() != 0 && ts.getMaxZoom() < maxZoomLvl) {
             maxZoomLvl = ts.getMaxZoom();
         }