diff --git a/time/src/format_description/parse/mod.rs b/time/src/format_description/parse/mod.rs
index 602ecf71f..c4cd1474b 100644
--- a/time/src/format_description/parse/mod.rs
+++ b/time/src/format_description/parse/mod.rs
@@ -80,7 +80,7 @@ pub fn parse_owned<const VERSION: usize>(
     let mut lexed = lexer::lex::<VERSION>(s.as_bytes());
     let ast = ast::parse::<_, VERSION>(&mut lexed);
     let format_items = format_item::parse(ast);
-    let items = format_items.collect::<Result<Box<_>, _>>()?;
+    let items: Box<_> = format_items.collect::<Result<Box<_>, _>>()?;
     Ok(items.into())
 }