diff --git a/lib/pact/provider/rspec.rb b/lib/pact/provider/rspec.rb
index 42363ae2..92788a5c 100644
--- a/lib/pact/provider/rspec.rb
+++ b/lib/pact/provider/rspec.rb
@@ -108,7 +108,7 @@ def describe_message expected_response, interaction_context
           include Pact::RSpec::Matchers
           extend Pact::Matchers::Messages
 
-          let(:expected_content) { expected_response.body[:content].as_json }
+          let(:expected_content) { expected_response.body[:contents].as_json }
           let(:response) { interaction_context.last_response }
           let(:differ) { Pact.configuration.body_differ_for_content_type diff_content_type }
           let(:diff_formatter) { Pact.configuration.diff_formatter_for_content_type diff_content_type }