diff --git a/src/main.rs b/src/main.rs
index aeeed35..285b487 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -122,17 +122,18 @@ pub fn process_config_item(options: &Options, config_item: &OSSBackupdConfigItem
         Ok(open_pgp_tool) => open_pgp_tool,
     };
 
-    let temp_zip_file = &format!("temp_file_{}.zip", SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs());
-    let temp_pgp_file = &format!("temp_file_{}.gpg", SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs());
+    let secs = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs();
+    let temp_zip_file = &format!("temp_file_{}.zip", secs);
+    let temp_pgp_file = &format!("temp_file_{}.gpg", secs);
 
     let remove_temp_files = || {
-        if Path::new(temp_zip_file).exists() {
+        if Path::new(temp_zip_file).is_file() {
             if options.verbose {
                 print_message(MessageType::DEBUG, &format!("Remove file: {}", temp_zip_file));
             }
             fs::remove_file(temp_zip_file).ok();
         }
-        if Path::new(temp_pgp_file).exists() {
+        if Path::new(temp_pgp_file).is_file() {
             if options.verbose {
                 print_message(MessageType::DEBUG, &format!("Remove file: {}", temp_pgp_file));
             }