diff --git a/src/filetransfer/mod.rs b/src/filetransfer/mod.rs
index 91bb6be..beccf70 100644
--- a/src/filetransfer/mod.rs
+++ b/src/filetransfer/mod.rs
@@ -72,7 +72,7 @@ pub trait FileTransfer {
     /// 
     /// Connect to the remote server
 
-    fn connect(&mut self, address: String, port: usize, username: Option<String>, password: Option<String>) -> Result<(), FileTransferError>;
+    fn connect(&mut self, address: String, port: u16, username: Option<String>, password: Option<String>) -> Result<(), FileTransferError>;
 
     /// ### disconnect
     /// 
diff --git a/src/filetransfer/sftp_transfer.rs b/src/filetransfer/sftp_transfer.rs
index ffe93fa..1987cec 100644
--- a/src/filetransfer/sftp_transfer.rs
+++ b/src/filetransfer/sftp_transfer.rs
@@ -110,7 +110,7 @@ impl FileTransfer for SftpFileTransfer {
     fn connect(
         &mut self,
         address: String,
-        port: usize,
+        port: u16,
         username: Option<String>,
         password: Option<String>,
     ) -> Result<(), FileTransferError> {