diff --git a/quickwit/quickwit-proto/protos/quickwit/metastore.proto b/quickwit/quickwit-proto/protos/quickwit/metastore.proto
index f5ca4ca666..970d605b38 100644
--- a/quickwit/quickwit-proto/protos/quickwit/metastore.proto
+++ b/quickwit/quickwit-proto/protos/quickwit/metastore.proto
@@ -206,10 +206,6 @@ message ListSplitsRequest {
   string query_json = 1;
 }
 
-message StreamSplitsRequest {
-  string query_json = 1;
-}
-
 message ListSplitsResponse {
   // TODO use repeated and encode splits json individually.
   string splits_serialized_json = 1;
diff --git a/quickwit/quickwit-proto/src/codegen/quickwit/quickwit.metastore.rs b/quickwit/quickwit-proto/src/codegen/quickwit/quickwit.metastore.rs
index 0d38156bfc..84eb8f9c24 100644
--- a/quickwit/quickwit-proto/src/codegen/quickwit/quickwit.metastore.rs
+++ b/quickwit/quickwit-proto/src/codegen/quickwit/quickwit.metastore.rs
@@ -70,13 +70,6 @@ pub struct ListSplitsRequest {
 #[derive(serde::Serialize, serde::Deserialize, utoipa::ToSchema)]
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Clone, PartialEq, ::prost::Message)]
-pub struct StreamSplitsRequest {
-    #[prost(string, tag = "1")]
-    pub query_json: ::prost::alloc::string::String,
-}
-#[derive(serde::Serialize, serde::Deserialize, utoipa::ToSchema)]
-#[allow(clippy::derive_partial_eq_without_eq)]
-#[derive(Clone, PartialEq, ::prost::Message)]
 pub struct ListSplitsResponse {
     /// TODO use repeated and encode splits json individually.
     #[prost(string, tag = "1")]