diff --git a/src/transport/smtp/pool/async_impl.rs b/src/transport/smtp/pool/async_impl.rs
index e9d8c0a..732fb35 100644
--- a/src/transport/smtp/pool/async_impl.rs
+++ b/src/transport/smtp/pool/async_impl.rs
@@ -78,7 +78,7 @@ impl<E: Executor> Pool<E> {
 
                             #[cfg(feature = "tracing")]
                             let mut created = 0;
-                            for _ in count..=(min_idle as usize) {
+                            for _ in count..(min_idle as usize) {
                                 let conn = match pool.client.connection().await {
                                     Ok(conn) => conn,
                                     Err(err) => {
diff --git a/src/transport/smtp/pool/sync_impl.rs b/src/transport/smtp/pool/sync_impl.rs
index 004cabb..1d78a98 100644
--- a/src/transport/smtp/pool/sync_impl.rs
+++ b/src/transport/smtp/pool/sync_impl.rs
@@ -72,7 +72,7 @@ impl Pool {
 
                         #[cfg(feature = "tracing")]
                         let mut created = 0;
-                        for _ in count..=(min_idle as usize) {
+                        for _ in count..(min_idle as usize) {
                             let conn = match pool.client.connection() {
                                 Ok(conn) => conn,
                                 Err(err) => {