diff --git a/preprocessor/preprocessor/config-schema.yaml b/preprocessor/preprocessor/config-schema.yaml
index 695bea47d2a4469b68983865522ae1e0c2db2982..231f3ef1a6465a0293ce366346571e2236d7f826 100644
--- a/preprocessor/preprocessor/config-schema.yaml
+++ b/preprocessor/preprocessor/config-schema.yaml
@@ -112,7 +112,7 @@ definitions:
         type:
           description: The type of georeferencing to apply.
           type: string
-          enum: [gcp, rpc, world] # TODO: more
+          enum: [gcp, rpc, corner, world] # TODO: more
         options:
           description: Additional options for the georeferencing. Depends on the type of georeferencing.
           type: object