diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6b38bc6d2..c0bf4b0b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Deprecated
 ### Removed
 ### Fixed
+- Fixed variable name in `OpenSearch::Client#respond_to_missing?` ([#247](https://github.com/opensearch-project/opensearch-ruby/pull/247))
 ### Security
 
 ## [3.2.0]
diff --git a/spec/opensearch/client/unit/opensearch_client_spec.rb b/spec/opensearch/client/unit/opensearch_client_spec.rb
new file mode 100644
index 000000000..635185e51
--- /dev/null
+++ b/spec/opensearch/client/unit/opensearch_client_spec.rb
@@ -0,0 +1,9 @@
+require_relative '../../../spec_helper'
+
+describe 'OpenSearch::Client#respond_to_missing?' do
+  it 'returns to correct results' do
+    client = OpenSearch::Client.new
+    expect(client.send(:respond_to_missing?, :perform_request)).to be true
+    expect(client.send(:respond_to_missing?, :something_else)).to be false
+  end
+end