diff --git a/crates/rust-analyzer/src/lsp/capabilities.rs b/crates/rust-analyzer/src/lsp/capabilities.rs
index 871cde58dc..939593dd45 100644
--- a/crates/rust-analyzer/src/lsp/capabilities.rs
+++ b/crates/rust-analyzer/src/lsp/capabilities.rs
@@ -210,10 +210,7 @@ impl ClientCapabilities {
                 .completion_item
                 .as_ref()?
                 .label_details_support
-                .as_ref()
-        })()
-        .copied()
-        .unwrap_or_default()
+        })() == Some(true)
     }
 
     fn completion_item(&self) -> Option<CompletionOptionsCompletionItem> {