diff --git a/lib/std/fmt.zig b/lib/std/fmt.zig
index 4a653823e5caf996d1e5f4e5c5bf2fb594aa2f33..0967d9f0693565c62eed224445a4717aceaa9db7 100644
--- a/lib/std/fmt.zig
+++ b/lib/std/fmt.zig
@@ -69,7 +69,7 @@ fn peekIsAlign(comptime fmt: []const u8) bool {
 ///
 /// If a formatted user type contains a function of the type
 /// ```
-/// fn format(value: ?, comptime fmt: []const u8, options: std.fmt.FormatOptions, context: var, comptime Errors: type, output: fn (@TypeOf(context), []const u8) Errors!void) Errors!void
+/// fn format(value: ?, comptime fmt: []const u8, options: std.fmt.FormatOptions, context: var, comptime Errors: type, comptime output: fn (@TypeOf(context), []const u8) Errors!void) Errors!void
 /// ```
 /// with `?` being the type formatted, this function will be called instead of the default implementation.
 /// This allows user types to be formatted in a logical manner instead of dumping all fields of the type.