diff --git a/ruby_event_store/lib/ruby_event_store/instrumented_repository.rb b/ruby_event_store/lib/ruby_event_store/instrumented_repository.rb
index 384452e7f2..b2133a1794 100644
--- a/ruby_event_store/lib/ruby_event_store/instrumented_repository.rb
+++ b/ruby_event_store/lib/ruby_event_store/instrumented_repository.rb
@@ -8,7 +8,7 @@ def initialize(repository, instrumentation)
     end
 
     def append_to_stream(records, stream, expected_version)
-      instrumentation.instrument("append_to_stream.repository.ruby_event_store", events: records, stream: stream) do
+      instrumentation.instrument("append_to_stream.repository.ruby_event_store", records: records, stream: stream) do
         repository.append_to_stream(records, stream, expected_version)
       end
     end
@@ -37,9 +37,9 @@ def count(specification)
       end
     end
 
-    def update_messages(messages)
-      instrumentation.instrument("update_messages.repository.ruby_event_store", messages: messages) do
-        repository.update_messages(messages)
+    def update_messages(records)
+      instrumentation.instrument("update_messages.repository.ruby_event_store", records: records) do
+        repository.update_messages(records)
       end
     end
 
diff --git a/ruby_event_store/spec/instrumented_repository_spec.rb b/ruby_event_store/spec/instrumented_repository_spec.rb
index bd583e914b..65e50bdb87 100644
--- a/ruby_event_store/spec/instrumented_repository_spec.rb
+++ b/ruby_event_store/spec/instrumented_repository_spec.rb
@@ -24,7 +24,9 @@ module RubyEventStore
         subscribe_to("append_to_stream.repository.ruby_event_store") do |notification_calls|
           instrumented_repository.append_to_stream([record], stream, expected_version)
 
-          expect(notification_calls).to eq([{ events: [record], stream: stream }])
+          expect(notification_calls).to eq([
+            { records: [record], stream: stream }
+          ])
         end
       end
     end
@@ -143,7 +145,9 @@ module RubyEventStore
         subscribe_to("update_messages.repository.ruby_event_store") do |notification_calls|
           instrumented_repository.update_messages([record])
 
-          expect(notification_calls).to eq([{ messages: [record] }])
+          expect(notification_calls).to eq([
+            { records: [record] }
+          ])
         end
       end
     end