diff --git a/format/desktop_entry/line.ha b/format/desktop_entry/line.ha
index c9fdaaf..30d05dc 100644
--- a/format/desktop_entry/line.ha
+++ b/format/desktop_entry/line.ha
@@ -1,4 +1,5 @@
 use fmt;
+use io;
 use locale;
 use strings;
 
@@ -46,9 +47,9 @@ export fn entry_finish(entr: entry) void = {
 
 // Formats a [[line]] and writes it to an [[io::handle]].
 export fn fprint(output: io::handle, lin: line) (size | io::error) = match (lin) {
-case blank                 => yield fmt::fprintln(output, lin);
-case let lin: comment      => yield fmt::fprintf(output, "#{}\n", lin: string);
-case let lin: group_header => yield fmt::fprintf(output, "[{}]\n", lin: string);
+case blank                 => yield fmt::fprintln(output);
+case let lin: comment      => yield fmt::fprintf(output, "#{}\n", lin: str);
+case let lin: group_header => yield fmt::fprintf(output, "[{}]\n", lin: str);
 case let lin: entry =>
 	let wrote = fmt::print(lin.key)?;
 	if (!locale::equal(locale::c, lin.locale)) {