diff --git a/wither/src/model.rs b/wither/src/model.rs
index f37aa2d..e5b51a3 100644
--- a/wither/src/model.rs
+++ b/wither/src/model.rs
@@ -168,7 +168,7 @@ where
     /// write concern.
     async fn save(&mut self, db: &Database, filter: Option<Document>) -> Result<()> {
         let coll = Self::collection(db);
-        let instance_doc = Self::document_from_instance(&self)?;
+        let instance_doc = Self::document_from_instance(self)?;
 
         // Ensure that journaling is set to true for this call, as we need to be able to get an ID back.
         let mut write_concern = Self::write_concern().unwrap_or_default();
@@ -180,7 +180,7 @@ where
             (Some(id), _) => doc! {"_id": id},
             (None, None) => {
                 let new_id = ObjectId::new();
-                self.set_id(new_id.clone());
+                self.set_id(new_id);
                 doc! {"_id": new_id}
             }
             (None, Some(filter)) => {
@@ -202,8 +202,10 @@ where
 
         // Update instance ID if needed.
         if id_needs_update {
-            let response_id = updated_doc.get_object_id("_id").map_err(|_| WitherError::ServerFailedToReturnObjectId)?;
-            self.set_id(response_id.clone());
+            let response_id = updated_doc
+                .get_object_id("_id")
+                .map_err(|_| WitherError::ServerFailedToReturnObjectId)?;
+            self.set_id(response_id);
         };
         Ok(())
     }
@@ -322,7 +324,7 @@ where
     /// defined in this model's `indexes` method.
     async fn sync(db: &Database) -> Result<()> {
         let coll = Self::collection(db);
-        let current_indexes = get_current_indexes(&db, &coll).await?;
+        let current_indexes = get_current_indexes(db, &coll).await?;
         sync_model_indexes(db, &coll, Self::indexes(), current_indexes).await?;
         Ok(())
     }
diff --git a/wither_derive/src/model.rs b/wither_derive/src/model.rs
index 184eec2..71f35ba 100644
--- a/wither_derive/src/model.rs
+++ b/wither_derive/src/model.rs
@@ -170,7 +170,7 @@ impl<'a> MetaModel<'a> {
 
     /// Extract any model attrs and bind them to their optional slots.
     fn extract_model_attrs(&mut self) {
-        let attrs = Self::parse_attrs(&self.attrs, MODEL_HELPER_ATTR);
+        let attrs = Self::parse_attrs(self.attrs, MODEL_HELPER_ATTR);
         // Parse over the internals of our `model` attrs. At this point, we are dealing with
         // individual elements inside of the various `model(...)` attrs.
         for attr_meta in attrs {