diff --git a/lib/galaxy/webapps/galaxy/buildapp.py b/lib/galaxy/webapps/galaxy/buildapp.py
index e0d90cb3b4eb..19680f7a85de 100644
--- a/lib/galaxy/webapps/galaxy/buildapp.py
+++ b/lib/galaxy/webapps/galaxy/buildapp.py
@@ -846,14 +846,6 @@ def connect_invocation_endpoint(endpoint_name, endpoint_suffix, action, conditio
         conditions=dict(method=["POST"]),
     )
 
-    webapp.mapper.connect(
-        "add_custom_builds",
-        "/api/users/{id}/custom_builds/{key}",
-        controller="users",
-        action="add_custom_builds",
-        conditions=dict(method=["PUT"]),
-    )
-
     # ========================
     # ===== WEBHOOKS API =====
     # ========================