diff --git a/src/libs/kata-types/src/config/drop_in.rs b/src/libs/kata-types/src/config/drop_in.rs
index 015e284b6f..208ea72fdc 100644
--- a/src/libs/kata-types/src/config/drop_in.rs
+++ b/src/libs/kata-types/src/config/drop_in.rs
@@ -240,7 +240,7 @@ mod drop_in_directory_handling {
                 "drop-in cfg file can only be a regular file or a symlink",
             ));
         }
-        let dropin_contents = fs::read_to_string(&dropin_file.path())?;
+        let dropin_contents = fs::read_to_string(dropin_file.path())?;
         let dropin_config: toml::Value = toml::from_str(&dropin_contents)?;
         super::toml_tree_ops::merge(base_config, dropin_config);
         Ok(())
@@ -267,7 +267,7 @@ mod drop_in_directory_handling {
     }
 
     pub fn load(base_cfg_file_path: &Path) -> Result<TomlConfig> {
-        let base_toml_str = fs::read_to_string(&base_cfg_file_path)?;
+        let base_toml_str = fs::read_to_string(base_cfg_file_path)?;
         let mut base_config: toml::Value = toml::from_str(&base_toml_str)?;
         let dropin_dir = get_dropin_dir_path(base_cfg_file_path)?;
 
@@ -324,7 +324,7 @@ mod drop_in_directory_handling {
             create_file(&config_path, BASE_CONFIG_DATA.as_bytes()).unwrap();
 
             let dropin_dir = tmpdir.path().join("config.d");
-            fs::create_dir(&dropin_dir).unwrap();
+            fs::create_dir(dropin_dir).unwrap();
 
             let config = load(&config_path).unwrap();
             check_base_config(&config);
diff --git a/src/libs/kata-types/tests/test_config.rs b/src/libs/kata-types/tests/test_config.rs
index b7d5f953b1..800a05f70b 100644
--- a/src/libs/kata-types/tests/test_config.rs
+++ b/src/libs/kata-types/tests/test_config.rs
@@ -340,7 +340,7 @@ mod tests {
 
         let path = env!("CARGO_MANIFEST_DIR");
         let path = Path::new(path).join("tests/texture/configuration-anno-0.toml");
-        let content = fs::read_to_string(&path).unwrap();
+        let content = fs::read_to_string(path).unwrap();
         let mut config = TomlConfig::load(&content).unwrap();
         assert!(anno.update_config_by_annotation(&mut config).is_err());
     }
@@ -349,7 +349,7 @@ mod tests {
     fn test_fail_to_change_kernel_path_because_of_invalid_path() {
         let path = env!("CARGO_MANIFEST_DIR");
         let path = Path::new(path).join("tests/texture/configuration-anno-0.toml");
-        let content = fs::read_to_string(&path).unwrap();
+        let content = fs::read_to_string(path).unwrap();
 
         let qemu = QemuConfig::new();
         qemu.register();