diff --git a/logstash-core/spec/logstash/plugin_spec.rb b/logstash-core/spec/logstash/plugin_spec.rb
index cd442a616..1a0b0a27b 100644
--- a/logstash-core/spec/logstash/plugin_spec.rb
+++ b/logstash-core/spec/logstash/plugin_spec.rb
@@ -1,4 +1,4 @@
-:# encoding utf-8
+# encoding utf-8
 require "spec_helper"
 require "logstash/plugin"
 require "logstash/outputs/base"