diff --git a/src/client.rs b/src/client.rs
index 1007413..0ee0383 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -216,14 +216,7 @@ impl<'a, T: Read + Write> AppendCmd<'a, T> {
     /// Note: be sure to set flags and optional date before you
     /// finish the command.
     pub fn finish(&mut self) -> Result<Appended> {
-        let flagstr = self
-            .flags
-            .clone()
-            .into_iter()
-            .filter(|f| *f != Flag::Recent)
-            .map(|f| f.to_string())
-            .collect::<Vec<String>>()
-            .join(" ");
+        let flagstr = iter_join(self.flags.iter().filter(|f| **f != Flag::Recent), " ");
 
         let datestr = if let Some(date) = self.date {
             format!(" \"{}\"", date.format("%d-%h-%Y %T %z"))