diff --git a/syscall/vm-object.c b/syscall/vm-object.c
index fc33383..5b5baeb 100644
--- a/syscall/vm-object.c
+++ b/syscall/vm-object.c
@@ -111,6 +111,13 @@ kern_status_t sys_vm_object_copy(
 	size_t count,
 	size_t *nr_copied)
 {
+	tracek("vm_object_copy(%x, %zx, %x, %zx, %zx, %p)",
+	       dst,
+	       dst_offset,
+	       src,
+	       src_offset,
+	       count,
+	       nr_copied);
 	struct task *self = current_task();
 
 	if (nr_copied