diff --git a/core/sysmaster/src/manager/pre_install.rs b/core/sysmaster/src/manager/pre_install.rs
index 698234788f89318689082aff4663dfc7ab15e24d..7032117c4ac63ef76f97da3189d50801e4f74a22 100644
--- a/core/sysmaster/src/manager/pre_install.rs
+++ b/core/sysmaster/src/manager/pre_install.rs
@@ -543,9 +543,7 @@ impl Install {
 
         let mut paths: Vec<PathBuf> = Vec::new();
         for p in &self.lookup_path.search_path {
-            let mut path = String::new();
-            path = path + p + &unit_install.name();
-            paths.push(PathBuf::from(path));
+            paths.push(Path::new(p).join(&unit_install.name()));
         }
 
         let configer = match UeConfigData::load_config(paths, &unit_install.name()) {