diff --git a/rust/lancedb/src/index.rs b/rust/lancedb/src/index.rs
index 47b42050a..ae3c089b1 100644
--- a/rust/lancedb/src/index.rs
+++ b/rust/lancedb/src/index.rs
@@ -119,6 +119,7 @@ pub enum IndexType {
     #[serde(alias = "LABEL_LIST")]
     LabelList,
     // FTS
+    #[serde(alias = "INVERTED")]
     FTS,
 }