diff --git a/src/main.rs b/src/main.rs
index d1442e4..5e007c7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,7 +8,6 @@ extern crate rocket;
 extern crate rocket_contrib;
 #[macro_use]
 extern crate serde_derive;
-#[macro_use]
 extern crate serde_json;
 extern crate toml;
 
diff --git a/src/models/note.rs b/src/models/note.rs
index d4ab38b..cd13ac1 100644
--- a/src/models/note.rs
+++ b/src/models/note.rs
@@ -71,7 +71,7 @@ impl Note {
                 .metadata()
                 .expect(&format!("Cannot get metadata of note file: {}", file_name));
 
-            let mut note = Note {
+            let note = Note {
                 id: String::from(name),
                 index: index,
                 data: data,