diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ab9ced..653e7dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Release Notes for `logstash-input-cloudwatch_logs`
 
+## Unreleased
+
+### Fixed
+* Fixed bad merge on [#eb38dfd](https://github.com/lukewaite/logstash-input-cloudwatch-logs/commit/eb38dfdc072b4fd21e9c1d83ea306e2b6c5df37b) and restore compatibility with the Logstash 5.x events API
+
 ## v0.10.1 (2017-04-19)
 
 ### Fixed
diff --git a/lib/logstash/inputs/cloudwatch_logs.rb b/lib/logstash/inputs/cloudwatch_logs.rb
index 98e9303..cfd264f 100644
--- a/lib/logstash/inputs/cloudwatch_logs.rb
+++ b/lib/logstash/inputs/cloudwatch_logs.rb
@@ -124,9 +124,9 @@ def process_log(queue, log, stream)
 
     @codec.decode(log.message.to_str) do |event|
       event.set("@timestamp", parse_time(log.timestamp))
-      event["[cloudwatch][ingestion_time]"] = parse_time(log.ingestion_time)
-      event["[cloudwatch][log_group]"] = stream.arn.split(/:/)[6]
-      event["[cloudwatch][log_stream]"] = stream.log_stream_name
+      event.set("[cloudwatch][ingestion_time]", parse_time(log.ingestion_time))
+      event.set("[cloudwatch][log_group]", stream.arn.split(/:/)[6])
+      event.set("[cloudwatch][log_stream]", stream.log_stream_name)
       decorate(event)
 
       queue << event