diff --git a/docs/schemas.rst b/docs/schemas.rst
index 1cd9405c..f3c760be 100644
--- a/docs/schemas.rst
+++ b/docs/schemas.rst
@@ -28,7 +28,7 @@ Level 3 (resampled mosaic) schema
 
   wfi_mosaic-1.0.0
 
-Level 4 schemas
+Level 4 (ancillary) schemas
 ---------------
 
 .. asdf-autoschemas::