diff --git a/exporter/otlp-metrics/lib/opentelemetry/exporter/otlp/metrics/util.rb b/exporter/otlp-metrics/lib/opentelemetry/exporter/otlp/metrics/util.rb
index 323ff8610..37f1896da 100644
--- a/exporter/otlp-metrics/lib/opentelemetry/exporter/otlp/metrics/util.rb
+++ b/exporter/otlp-metrics/lib/opentelemetry/exporter/otlp/metrics/util.rb
@@ -9,7 +9,7 @@ module Exporter
     module OTLP
       module Metrics
         # Util module provide essential functionality for exporter
-        module Util 
+        module Util
           KEEP_ALIVE_TIMEOUT = 30
           RETRY_COUNT = 5
           ERROR_MESSAGE_INVALID_HEADERS = 'headers must be a String with comma-separated URL Encoded UTF-8 k=v pairs or a Hash'