diff --git a/json.zig b/json.zig
index e917dcfaa50565c302644462a7b9f57db1484c98..767e713fdcea1a7dde2621c0d04b8fc198199c96 100644
--- a/json.zig
+++ b/json.zig
@@ -719,7 +719,7 @@ const Space = union(enum) {
     }
 };
 
-pub fn stringify(writer: anytype, value: anytype, options: std.json.Stringify.Options) extras.Pointee(@TypeOf(writer)).WriteError!void {
+pub fn stringify(writer: anytype, value: anytype, options: std.json.Stringify.Options) (extras.Pointee(@TypeOf(writer)).WriteError || error{Unexpected})!void {
     const T = @TypeOf(value);
     if (comptime extras.isZigString(T)) {
         if (extras.matchesAll(u8, value, std.ascii.isAscii)) {