Index: applications/editors/josm/plugins/lakewalker/src/org/openstreetmap/josm/plugins/lakewalker/LakewalkerAction.java
===================================================================
--- applications/editors/josm/plugins/lakewalker/src/org/openstreetmap/josm/plugins/lakewalker/LakewalkerAction.java	(revision 18876)
+++ applications/editors/josm/plugins/lakewalker/src/org/openstreetmap/josm/plugins/lakewalker/LakewalkerAction.java	(revision 18880)
@@ -154,7 +154,8 @@
                 @Override protected void finish() {
                 }
-                @Override protected void cancel() {
-                  cancel();
-                }
+
+				@Override protected void cancel() {
+					LakewalkerAction.this.cancel();
+				}
             };
             Thread executeThread = new Thread(lakewalkerTask);