diff --git a/icons/_nanomaps/Delta_nanomap_z1.png b/icons/_nanomaps/Delta_nanomap_z1.png
index f0202fae3a7..c5938172fc6 100644
Binary files a/icons/_nanomaps/Delta_nanomap_z1.png and b/icons/_nanomaps/Delta_nanomap_z1.png differ