diff --git a/src/read.rs b/src/read.rs
index 4a68d79e..75f24839 100644
--- a/src/read.rs
+++ b/src/read.rs
@@ -703,6 +703,7 @@ impl<R: Read + Seek> ZipArchive<R> {
                                 "Invalid UTF-8 as symlink target",
                             ));
                         };
+                        let target = target.into_boxed_str();
                         let target_is_dir_from_archive =
                             self.shared.files.contains_key(&target) && is_dir(&target);
                         let target_internal_path: PathBuf = target.into();
diff --git a/src/spec.rs b/src/spec.rs
index 893228e4..7b238c50 100644
--- a/src/spec.rs
+++ b/src/spec.rs
@@ -227,7 +227,7 @@ impl Zip64CentralDirectoryEnd {
     }
 }
 
-pub(crate) fn is_dir(filename: &str) -> bool {
+pub(crate) fn is_dir<T: AsRef<str>>(filename: T) -> bool {
     filename
         .chars()
         .next_back()