diff --git a/tools/libs/light/libxl_dm.c b/tools/libs/light/libxl_dm.c
index 5309496c58..3599a82ef0 100644
--- a/tools/libs/light/libxl_dm.c
+++ b/tools/libs/light/libxl_dm.c
@@ -2311,7 +2311,7 @@ void libxl__spawn_stub_dm(libxl__egc *egc, libxl__stub_dm_spawn_state *sdss)
     dm_config->b_info.target_memkb = dm_config->b_info.max_memkb;
 
     dm_config->b_info.max_grant_frames = guest_config->b_info.max_grant_frames;
-    dm_config->b_info.max_maptrack_frames = 0;
+    dm_config->b_info.max_maptrack_frames = guest_config->b_info.max_maptrack_frames;
 
     dm_config->b_info.u.pv.features = "";