Index: trunk/src/org/openstreetmap/josm/data/imagery/ImageryInfo.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/imagery/ImageryInfo.java	(revision 6265)
+++ trunk/src/org/openstreetmap/josm/data/imagery/ImageryInfo.java	(revision 6266)
@@ -156,11 +156,12 @@
             }
             if (i.serverProjections != null && !i.serverProjections.isEmpty()) {
-                String val = "";
+                StringBuilder val = new StringBuilder();
                 for (String p : i.serverProjections) {
-                    if (!val.isEmpty())
-                        val += ",";
-                    val += p;
-                }
-                projections = val;
+                    if (val.length() > 0) {
+                        val.append(",");
+                    }
+                    val.append(p);
+                }
+                projections = val.toString();
             }
         }