diff --git a/services/horizon/internal/docs/reference/endpoints/assets-all.md b/services/horizon/internal/docs/reference/endpoints/assets-all.md
index 80bd3b3d5e..fdf49bc238 100644
--- a/services/horizon/internal/docs/reference/endpoints/assets-all.md
+++ b/services/horizon/internal/docs/reference/endpoints/assets-all.md
@@ -7,6 +7,9 @@ clientData:
 This endpoint represents all [assets](../resources/asset.md).
 It will give you all the assets in the system along with various statistics about each.
 
+Note: When running this in `catchup_recent` mode you will only get a subset of all the assets in the system.
+This is because we only register assets when they are encountered during ingestion.
+
 ## Request
 
 ```