diff --git a/source/log4net-loggly/LogglyFormatter.cs b/source/log4net-loggly/LogglyFormatter.cs
index 3ad3c6e..ec0196c 100644
--- a/source/log4net-loggly/LogglyFormatter.cs
+++ b/source/log4net-loggly/LogglyFormatter.cs
@@ -83,6 +83,7 @@ private static string ToJsonString(JObject loggingInfo)
                 loggingInfo,
                 new JsonSerializerSettings
                 {
+                    Formatting = Formatting.None,
                     ReferenceLoopHandling = ReferenceLoopHandling.Ignore,
                 });
         }