Index: trunk/src/org/openstreetmap/josm/io/remotecontrol/RequestProcessor.java
===================================================================
--- trunk/src/org/openstreetmap/josm/io/remotecontrol/RequestProcessor.java	(revision 15720)
+++ trunk/src/org/openstreetmap/josm/io/remotecontrol/RequestProcessor.java	(revision 15721)
@@ -13,5 +13,4 @@
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
 import java.util.Date;
 import java.util.HashMap;
@@ -494,5 +493,5 @@
             }
             if (mandatory != null && mandatory.length > 0) {
-                usage.append("<br/>mandatory parameters: ").append(String.join(", ", mandatory))
+                usage.append("<br/>mandatory parameters: ").append(String.join(", ", mandatory));
             }
             if (optional != null && optional.length > 0) {