diff --git a/panda/src/collide/Sources.pp b/panda/src/collide/Sources.pp
index 8f07f1de36..427039d076 100644
--- a/panda/src/collide/Sources.pp
+++ b/panda/src/collide/Sources.pp
@@ -54,6 +54,7 @@
   #define TARGET test_collide
   #define LOCAL_LIBS \
     collide
+  #define OTHER_LIBS $[OTHER_LIBS] pystub
 
   #define SOURCES \
     test_collide.cxx
diff --git a/panda/src/collide/test_collide.cxx b/panda/src/collide/test_collide.cxx
index a40fe8980c..c5512bbe36 100644
--- a/panda/src/collide/test_collide.cxx
+++ b/panda/src/collide/test_collide.cxx
@@ -62,6 +62,7 @@ main(int argc, char *argv[]) {
 
   CollisionTraverser ct;
   PT(CollisionHandlerPusher) chp = new CollisionHandlerPusher;
+  chp->add_collider(aa, a_aa);
   ct.add_collider(aa, chp);
 
   ct.traverse(r);