diff --git a/crates/mun_hir/src/code_model.rs b/crates/mun_hir/src/code_model.rs
index 48f119f81..48e9d847f 100644
--- a/crates/mun_hir/src/code_model.rs
+++ b/crates/mun_hir/src/code_model.rs
@@ -170,7 +170,7 @@ pub struct FnData {
 }
 
 impl FnData {
-    pub(crate) fn fn_data_query(db: &(impl DefDatabase), func: Function) -> Arc<FnData> {
+    pub(crate) fn fn_data_query(db: &impl DefDatabase, func: Function) -> Arc<FnData> {
         let src = func.source(db);
         let mut type_ref_builder = TypeRefBuilder::default();
         let name = src
diff --git a/crates/mun_hir/src/code_model/src.rs b/crates/mun_hir/src/code_model/src.rs
index c900ac1fb..040602d96 100644
--- a/crates/mun_hir/src/code_model/src.rs
+++ b/crates/mun_hir/src/code_model/src.rs
@@ -16,7 +16,7 @@ pub trait HasSource {
 
 impl HasSource for Function {
     type Ast = ast::FunctionDef;
-    fn source(self, db: &(impl DefDatabase)) -> Source<ast::FunctionDef> {
+    fn source(self, db: &impl DefDatabase) -> Source<ast::FunctionDef> {
         self.id.source(db)
     }
 }