diff --git a/src/middlewares/email_exists.rs b/src/middlewares/email_exists.rs
index 7df796f..64d4ca6 100644
--- a/src/middlewares/email_exists.rs
+++ b/src/middlewares/email_exists.rs
@@ -37,7 +37,7 @@ pub async fn email_exists<'a>(
             ))
         }
     };
-    if rows.len() > 0 {
+    if !rows.is_empty() {
         return Err(std::io::Error::new(
             std::io::ErrorKind::InvalidInput,
             "Este e-mail já está sendo utilizado por outro usuário.",
diff --git a/tests/mocks/functional_tester.rs b/tests/mocks/functional_tester.rs
index 688cbbb..40dd144 100644
--- a/tests/mocks/functional_tester.rs
+++ b/tests/mocks/functional_tester.rs
@@ -86,7 +86,7 @@ impl FunctionalTester {
 
         let rows = client.query(&stmt, &[]).await.unwrap();
 
-        if rows.len() > 0 {
+        if !rows.is_empty() {
             true
         } else {
             false
@@ -132,7 +132,7 @@ impl FunctionalTester {
 
         let rows = client.query(&stmt, &[]).await.unwrap();
 
-        if rows.len() > 0 {
+        if !rows.is_empty() {
             false
         } else {
             true