1 files changed, 5 insertions, 1 deletions

diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs
index 320414ecf..617612dc3 100644
--- a/crates/rust-analyzer/src/config.rs
+++ b/crates/rust-analyzer/src/config.rs
@@ -241,7 +241,11 @@ impl Config {
                         set(value, "/checkOnSave/extraArgs", extra_args);
                         set(value, "/checkOnSave/command", command);
                         set(value, "/checkOnSave/allTargets", all_targets);
-                        set(value, "/checkOnSave/allFeatures", all_features);
+                        if let Some(new_all_features) = get(value, "/checkOnSave/allFeatures") {
+                            *all_features = new_all_features;
+                        } else {
+                            *all_features = self.cargo.all_features;
+                        }
                         set(value, "/checkOnSave/features", features);
                         if features.is_empty() && !self.cargo.features.is_empty() {
                             *features = self.cargo.features.clone();