diff --git a/google-cloud-storage/samples/acceptance/files_test.rb b/google-cloud-storage/samples/acceptance/files_test.rb
index aa8bf1f10f49..dc93097e3822 100644
--- a/google-cloud-storage/samples/acceptance/files_test.rb
+++ b/google-cloud-storage/samples/acceptance/files_test.rb
@@ -331,7 +331,6 @@ def mock_cipher.random_key
 
     before(:each) do
       bucket.create_file local_file, remote_file_name
-      bucket.create_file local_file, remote_file_name+"2"
       
       set_object_contexts bucket_name: bucket.name, file_name: remote_file_name, custom_context_key: custom_context_key1, custom_context_value: custom_context_value1
       set_object_contexts bucket_name: bucket.name, file_name: remote_file_name, custom_context_key: custom_context_key2, custom_context_value: custom_context_value2
@@ -349,25 +348,29 @@ def mock_cipher.random_key
     let(:custom_context_value1) { "my-custom-value" }
     let(:custom_context_key2) { "my-custom-key-2" }
     let(:custom_context_value2) { "my-custom-value-2" }
+    let(:remote_file_name2) { "path/file_name_#{SecureRandom.hex}.txt" }
 
     before(:each) do
       bucket.create_file local_file, remote_file_name
-      bucket.create_file local_file, remote_file_name+"2"
+      bucket.create_file local_file, remote_file_name2
       
       set_object_contexts bucket_name: bucket.name, file_name: remote_file_name, custom_context_key: custom_context_key1, custom_context_value: custom_context_value1
-      set_object_contexts bucket_name: bucket.name, file_name: remote_file_name+"2", custom_context_key: custom_context_key2, custom_context_value: custom_context_value2
+      set_object_contexts bucket_name: bucket.name, file_name: remote_file_name2, custom_context_key: custom_context_key2, custom_context_value: custom_context_value2
     end
 
+
     it "filters out files on the basis of custom context key" do
-      assert_output "File: #{remote_file_name} has context key: #{custom_context_key1}\n" do
+      out, _err = capture_io do
         list_object_contexts bucket_name: bucket.name, custom_context_key: custom_context_key1
       end
+      assert_includes out, "#{custom_context_key1}\n"
     end
 
     it "filters out files on the basis of custom context key and value" do
-      assert_output "File: #{remote_file_name+"2"} has context key: #{custom_context_key2}\n" do
+      out, _err = capture_io do
         list_object_contexts bucket_name: bucket.name, custom_context_key: custom_context_key2, custom_context_value: custom_context_value2
       end
+      assert_includes out, "#{custom_context_key2}\n"
     end
   end