diff --git a/spec/cli_spec.rb b/spec/cli_spec.rb
index 8012064b..0a4ad3d3 100644
--- a/spec/cli_spec.rb
+++ b/spec/cli_spec.rb
@@ -62,7 +62,7 @@
 
     it 'for arm machines on linux' do
       cli = Kaiser::Cli.new
-      stub_const('RUBY_PLATFORM', 'arch64-linux')
+      stub_const('RUBY_PLATFORM', 'aarch64-linux')
       expect(cli.send(:selenium_node_image)).to eq('seleniarm/standalone-chromium')
     end
   end