diff --git a/hm/scripts/jlab b/hm/scripts/jlab
index 12bb8df..6d7623d 100755
--- a/hm/scripts/jlab
+++ b/hm/scripts/jlab
@@ -250,7 +250,7 @@ elif sys.argv[1] == "push":
     bookmark = current_bookmark()
     if not bookmark:
         raise RuntimeError("Couldn't find a current branch")
-    heads = jj.log("heads(@::)")
+    heads = jj.log("heads(ancestors(@::) ~ empty())")
     if len(heads) != 1:
         raise RuntimeError("Multiple heads")  # Or none if something goes horribly wrong
     head = heads[0]