diff --git a/tracing-subscriber/src/fmt/format/json.rs b/tracing-subscriber/src/fmt/format/json.rs
index abcd3f5064..6fe1339143 100644
--- a/tracing-subscriber/src/fmt/format/json.rs
+++ b/tracing-subscriber/src/fmt/format/json.rs
@@ -284,7 +284,7 @@ mod test {
         let make_writer = || MockWriter::new(&BUF);
 
         let expected =
-        "{\"timestamp\":\"fake time\",\"level\":\"INFO\",\"span\":{\"answer\":42,\"name\":\"json_span\",\"number\":3},\"target\":\"tracing_subscriber::fmt::format::json::test\",\"fields\":{\"message\":\"some json test\"}\n";
+        "{\"timestamp\":\"fake time\",\"level\":\"INFO\",\"span\":{\"answer\":42,\"name\":\"json_span\",\"number\":3},\"target\":\"tracing_subscriber::fmt::format::json::test\",\"fields\":{\"message\":\"some json test\"}}\n";
 
         test_json(make_writer, expected, &BUF);
     }