diff --git a/config/latiss/filterMap.py b/config/latiss/filterMap.py
index a899b11b3..2a9fad3fc 100644
--- a/config/latiss/filterMap.py
+++ b/config/latiss/filterMap.py
@@ -10,5 +10,6 @@
         # ATLAS Refcat2 does not have y band.
         ("SDSSy_65mm~empty", "z"),
         ("empty~SDSSy_65mm", "z"),
+        ("y", "z"),
     ]:
     config.filterMap[source] = target