diff --git a/tests/checkerpick.lua b/tests/checkerpick.lua
index 8bbca73..e94352d 100644
--- a/tests/checkerpick.lua
+++ b/tests/checkerpick.lua
@@ -11,16 +11,14 @@ function init_event()
 end
 
 function mouse_motion_event(x, y, xrel, yrel)
-    objects = ag.pickObjects(x, y)
-    for i, obj in ipairs(objects) do
-        if obj == ground then
-            x = obj.pick_pos[1]
-            y = obj.pick_pos[2]
-            xp = 2 * math.floor(x / 2) + 1
-            yp = 2 * math.floor(y / 2) + 1
-            if xp >= -3 and xp <= 3 and yp >= -3 and yp <= 3 then
-                hilite:setPosition(xp, yp, 0.1)
-            end
+    local hit = ag.pickOne(x, y, ground)
+    if hit then
+        x = ground.pick_pos[1]
+        y = ground.pick_pos[2]
+        xp = 2 * math.floor(x / 2) + 1
+        yp = 2 * math.floor(y / 2) + 1
+        if xp >= -3 and xp <= 3 and yp >= -3 and yp <= 3 then
+            hilite:setPosition(xp, yp, 0.1)
         end
     end
 end