diff --git a/Cargo.toml b/Cargo.toml
index e006c725fe0a1..d51528cddcbcb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -71,6 +71,7 @@ doc_markdown = "allow"
 # `const` functions do not make sense for our project because this is not a `const` library.
 # This rule also confuses newcomers and forces them to add `const` blindlessly without any reason.
 missing_const_for_fn = "allow"
+significant_drop_in_scrutinee = "warn"
 # cargo
 cargo = { level = "warn", priority = -1 }
 multiple_crate_versions = "allow"
diff --git a/crates/oxc_language_server/src/main.rs b/crates/oxc_language_server/src/main.rs
index c6be04da2f81d..db87670c3d9e2 100644
--- a/crates/oxc_language_server/src/main.rs
+++ b/crates/oxc_language_server/src/main.rs
@@ -514,7 +514,8 @@ impl Backend {
 
     async fn handle_file_update(&self, uri: Url, content: Option<String>, version: Option<i32>) {
         if let Some(Some(_root_uri)) = self.root_uri.get() {
-            if let Some(diagnostics) = self.server_linter.read().await.run_single(&uri, content) {
+            let diagnostics = self.server_linter.read().await.run_single(&uri, content);
+            if let Some(diagnostics) = diagnostics {
                 self.client
                     .publish_diagnostics(
                         uri.clone(),