1 files changed, 1 insertions, 1 deletions
diff --git a/cli/args/config_file.rs b/cli/args/config_file.rs
index 82ae7e5d7..ad204f449 100644
--- a/cli/args/config_file.rs
+++ b/cli/args/config_file.rs
@@ -163,7 +163,7 @@ pub const IGNORED_COMPILER_OPTIONS: &[&str] = &[
 /// A function that works like JavaScript's `Object.assign()`.
 pub fn json_merge(a: &mut Value, b: &Value) {
   match (a, b) {
-    (&mut Value::Object(ref mut a), &Value::Object(ref b)) => {
+    (&mut Value::Object(ref mut a), Value::Object(b)) => {
       for (k, v) in b {
         json_merge(a.entry(k.clone()).or_insert(Value::Null), v);
       }