diff --git a/backend/src/database/mod.rs b/backend/src/database/mod.rs
index 3525a77..691911d 100644
--- a/backend/src/database/mod.rs
+++ b/backend/src/database/mod.rs
@@ -1,3 +1,3 @@
 pub mod connection;
 
-pub use connection::*;
\ No newline at end of file
+pub use connection::*;
diff --git a/backend/src/models/task.rs b/backend/src/models/task.rs
index 685f11c..3794288 100644
--- a/backend/src/models/task.rs
+++ b/backend/src/models/task.rs
@@ -32,7 +32,7 @@ impl TaskModel {
         title: &str,
         description: Option<&str>,
     ) -> Result<TaskModel> {
-        if title.len() == 0 {
+        if title.is_empty() {
             bail!("Title must not be empty");
         }
 
@@ -70,10 +70,10 @@ impl TaskModel {
         )
         .bind(&self.title)
         .bind(&self.description)
-        .bind(&self.status)
+        .bind(self.status)
         .bind(now)
-        .bind(&self.completed_at)
-        .bind(&self.id)
+        .bind(self.completed_at)
+        .bind(self.id)
         .execute(pool)
         .await?;
 
diff --git a/backend/src/services/mod.rs b/backend/src/services/mod.rs
index d29b0fe..7c095e5 100644
--- a/backend/src/services/mod.rs
+++ b/backend/src/services/mod.rs
@@ -9,6 +9,7 @@ use axum::{
 
 // AppError
 // Borrowed from example: https://github.com/tokio-rs/axum/blob/axum-v0.8.4/examples/anyhow-error-response/src/main.rs
+#[derive(Debug)]
 pub enum AppError {
     InternalError(anyhow::Error),
     JsonExtractError(JsonRejection),
@@ -74,7 +75,7 @@ impl From<PathRejection> for AppError {
 
 impl From<anyhow::Error> for AppError {
     fn from(err: anyhow::Error) -> Self {
-        Self::InternalError(err.into())
+        Self::InternalError(err)
     }
 }
 
diff --git a/backend/src/services/tasks.rs b/backend/src/services/tasks.rs
index 3773f01..1721b83 100644
--- a/backend/src/services/tasks.rs
+++ b/backend/src/services/tasks.rs
@@ -73,7 +73,7 @@ pub async fn update_task(
     let mut model = TaskModel::get_by_id(&pool, task_id).await?;
 
     if let Some(title) = input.title {
-        if title.len() == 0 {
+        if title.is_empty() {
             return Err(AppError::Unprocessable(
                 "Title must not be empty".to_string(),
             ));