diff --git a/src/file/checked.rs b/src/file/checked.rs
index d8f1016..262e486 100644
--- a/src/file/checked.rs
+++ b/src/file/checked.rs
@@ -32,7 +32,8 @@ impl AsRef<[u8]> for Checked {
 }
 
 impl Checked {
-    pub(super) fn new_direct(path: PathBuf, size: u64, hash: Option<String>) -> Self {
+    /// create this directly, without any checks
+    pub(super) unsafe fn new_unchecked(path: PathBuf, size: u64, hash: Option<String>) -> Self {
         Self { path, size, hash }
     }
 
@@ -93,9 +94,7 @@ impl Checked {
     ) -> crate::Result<Uploading> {
         let file_id = client.file_create(uri, alias_id, share_id, &self)?;
 
-        Ok(Uploading::new_direct(
-            self.path, self.size, self.hash, file_id,
-        ))
+        Ok(unsafe { Uploading::new_unchecked(self.path, self.size, self.hash, file_id) })
     }
 }
 
@@ -160,8 +159,8 @@ mod tests {
                 "Checked",
             );
 
-            // new_direct
-            let chk = Checked::new_direct(chk.path, chk.size, chk.hash);
+            // new unchecked
+            let chk = unsafe { Checked::new_unchecked(chk.path, chk.size, chk.hash) };
             assert_eq!(chk.path, path);
             assert_eq!(chk.size, size);
             assert!(chk.hash.is_none());
diff --git a/src/file/chunk.rs b/src/file/chunk.rs
index 0c22124..1a70600 100644
--- a/src/file/chunk.rs
+++ b/src/file/chunk.rs
@@ -40,7 +40,12 @@ where
 }
 
 impl<'t> Chunk<'t> {
-    pub(super) fn new_direct(file_id: sharry::FileID, offset: u64, data: &'t [u8]) -> Self {
+    /// create this directly, without any checks
+    pub(super) unsafe fn new_unchecked(
+        file_id: sharry::FileID,
+        offset: u64,
+        data: &'t [u8],
+    ) -> Self {
         Self {
             file_id,
             offset,
@@ -83,9 +88,10 @@ mod tests {
 
     #[test]
     fn basic_tests() {
+        // items from `DATA_LENGTHS_BAD` used as mock offsets
         for (data, len, mock_offset) in cases_with(DATA_LENGTHS_BAD) {
             let fid = sharry::FileID::default();
-            let chunk = Chunk::new_direct(fid, mock_offset, data);
+            let chunk = unsafe { Chunk::new_unchecked(fid, mock_offset, data) };
 
             let repr_expect = format!(
                 "Chunk {{ file_id: {:?}, offset: {:?}, data.len(): {:?}, .. }}",
diff --git a/src/file/uploading.rs b/src/file/uploading.rs
index a751497..6fce206 100644
--- a/src/file/uploading.rs
+++ b/src/file/uploading.rs
@@ -33,7 +33,8 @@ pub struct Uploading {
 }
 
 impl Uploading {
-    pub(super) fn new_direct(
+    /// create this directly, without any checks
+    pub(super) unsafe fn new_unchecked(
         path: PathBuf,
         size: u64,
         hash: Option<String>,
@@ -93,7 +94,8 @@ impl Uploading {
             ));
         }
 
-        let chunk = Chunk::new_direct(self.file_id.clone(), self.offset, &buf[..read_len]);
+        let chunk =
+            unsafe { Chunk::new_unchecked(self.file_id.clone(), self.offset, &buf[..read_len]) };
         self.previous_offset = Some(self.offset);
         self.offset += chunk.get_length();
 
@@ -117,7 +119,7 @@ impl Uploading {
     ///
     /// - consume self, returning as a `file::Checked`
     pub fn stop(self) -> Checked {
-        Checked::new_direct(self.path, self.size, self.hash)
+        unsafe { Checked::new_unchecked(self.path, self.size, self.hash) }
     }
 }