diff --git a/examples/cluster.c b/examples/cluster.c
index 505f2fc..172cab1 100644
--- a/examples/cluster.c
+++ b/examples/cluster.c
@@ -203,13 +203,13 @@ int main(int argc, char **argv) {
     Window win;
     Pixmap buf;
     GC gc;
-    fd_set rfds, wfds, rready, wready;
+    fd_set rfds, rready;
 
     hexagram_can_if *can_if;
 
     int screen, fd, fd2,
-        width  = 1024,
-        height =  480;
+        width  = 480,
+        height = 224;
 
     XGCValues values = {
         .foreground         = 0x000000,
@@ -248,7 +248,7 @@ int main(int argc, char **argv) {
     FD_SET(fd2, &rfds);
 
     while (1) {
-        int nready, pending;
+        int pending;
 
         while ((pending = XPending(display)) != 0) {
             XEvent e;
@@ -291,12 +291,11 @@ int main(int argc, char **argv) {
             draw_gauge_cluster(cr, &frame, 0, 0, width, height);
 
             XCopyArea(display, buf, win, gc, 0, 0,
-                      1024, 480,
+                      width, height,
                       0, 0);
         }
     }
 
-done:
     cairo_destroy(cr);
 
     cairo_surface_destroy(sfc);