diff --git a/src/cachefile.rs b/src/cachefile.rs
index 8a676b3..98cf19a 100644
--- a/src/cachefile.rs
+++ b/src/cachefile.rs
@@ -31,11 +31,11 @@ impl FileState {
     fn start_upload(
         self,
         http: &impl Client,
-        endpoint: &str,
+        endpoint: impl FnOnce() -> String,
         alias_id: &str,
     ) -> sharry::Result<file::Uploading> {
         match self {
-            FileState::C(checked) => checked.start_upload(http, endpoint, alias_id),
+            FileState::C(checked) => checked.start_upload(http, &endpoint(), alias_id),
             FileState::U(uploading) => Ok(uploading),
         }
     }
@@ -105,11 +105,12 @@ impl CacheFile {
 
     pub fn pop_file(&mut self, http: &impl Client) -> Option<file::Uploading> {
         if let Some(state) = self.files.pop_front() {
-            let endpoint = self
-                .uri
-                .endpoint(format!("alias/upload/{}/files/tus", self.share_id));
+            let endpoint = || {
+                self.uri
+                    .endpoint(format!("alias/upload/{}/files/tus", self.share_id))
+            };
             // TODO somehow retry
-            Some(state.start_upload(http, &endpoint, &self.alias_id).unwrap()) // HACK unwrap
+            Some(state.start_upload(http, endpoint, &self.alias_id).unwrap()) // HACK unwrap
         } else {
             None
         }