diff --git a/src/api2/types/mod.rs b/src/api2/types/mod.rs
index 80db98fc..1bd4f92a 100644
--- a/src/api2/types/mod.rs
+++ b/src/api2/types/mod.rs
@@ -365,6 +365,7 @@ pub const DATASTORE_MAP_SCHEMA: Schema = StringSchema::new("Datastore mapping.")
     .format(&DATASTORE_MAP_FORMAT)
     .min_length(3)
     .max_length(65)
+    .type_text("(<source>=)?<target>")
     .schema();
 
 pub const DATASTORE_MAP_ARRAY_SCHEMA: Schema = ArraySchema::new(