diff --git a/src/morethantext/mod.rs b/src/morethantext/mod.rs
index e4223a9..40c83da 100644
--- a/src/morethantext/mod.rs
+++ b/src/morethantext/mod.rs
@@ -117,6 +117,11 @@ impl MoreThanText {
         })
     }
 
+    fn filename(&self, id: &str) -> String {
+        let filename = Path::new(&self.dir).join(&id);
+        filename.into_os_string().into_string().unwrap()
+    }
+
     async fn add_entry(&self, entry: CacheType) -> Result<String, DBError> {
         let mut id: String = "".to_string();
         let mut dup = true;
@@ -124,7 +129,7 @@ impl MoreThanText {
             id = thread_rng().sample_iter(&Alphanumeric).take(32).collect();
             dup = Path::new(&self.dir).join(&id).as_path().exists().await;
         }
-        match write(Path::new(&self.dir).join(&id), entry.to_bytes()).await {
+        match write(Path::new(&self.filename(&id)), entry.to_bytes()).await {
             Ok(_) => (),
             Err(err) => {
                 let mut error = DBError::new("data write");
@@ -145,7 +150,7 @@ impl MoreThanText {
                 entry.touch();
                 Ok(entry.clone())
             }
-            None => match read(Path::new(&self.dir).join(&id)).await {
+            None => match read(Path::new(&self.filename(id))).await {
                 Ok(content) => {
                     let data = CacheEntry::new(CacheType::from_bytes(content));
                     cache.insert(id.to_string(), data.clone());
@@ -161,7 +166,7 @@ impl MoreThanText {
             Ok(_) => (),
             Err(err) => return Err(err),
         }
-        match write(Path::new(&self.dir).join(&id), entry.to_bytes()).await {
+        match write(Path::new(&self.filename(id)), entry.to_bytes()).await {
             Ok(_) => (),
             Err(err) => {
                 let mut error = DBError::new("data write");