Index: trunk/src/org/openstreetmap/josm/data/Version.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/Version.java	(revision 11898)
+++ trunk/src/org/openstreetmap/josm/data/Version.java	(revision 11899)
@@ -178,5 +178,5 @@
         int v = getVersion();
         String s = (v == JOSM_UNKNOWN_VERSION) ? "UNKNOWN" : Integer.toString(v);
-        if (buildName != null) {
+        if (buildName != null && !buildName.isEmpty()) {
             s += ' ' + buildName;
         }