diff --git a/crates/rust-analyzer/src/lsp/to_proto.rs b/crates/rust-analyzer/src/lsp/to_proto.rs
index 06d02b63f2..38bb30c978 100644
--- a/crates/rust-analyzer/src/lsp/to_proto.rs
+++ b/crates/rust-analyzer/src/lsp/to_proto.rs
@@ -373,7 +373,7 @@ fn completion_item(
 
     if config.completion_label_details_support() {
         let has_label_details =
-            item.label.detail_left.is_some() || item.label.detail_left.is_some();
+            item.label.detail_left.is_some() || item.label.detail_right.is_some();
         if fields_to_resolve.resolve_label_details {
             something_to_resolve |= has_label_details;
         } else if has_label_details {