diff --git a/spring-cloud-contract.html b/spring-cloud-contract.html
index caeb0234a6..c5cd51af0b 100644
--- a/spring-cloud-contract.html
+++ b/spring-cloud-contract.html
@@ -3781,7 +3781,8 @@ inside the application (e.g. scheduler)</p>
  // then:
   ContractVerifierMessage response = contractVerifierMessaging.receive("activemq:output");
   assertThat(response).isNotNull();
-  assertThat(response.getHeader("BOOK-NAME")).isEqualTo("foo");
+  assertThat(response.getHeader("BOOK-NAME")).isNotNull();
+  assertThat(response.getHeader("BOOK-NAME").toString()).isEqualTo("foo");
  // and:
   DocumentContext parsedJson = JsonPath.parse(contractVerifierObjectMapper.writeValueAsString(response.getPayload()));
   assertThatJson(parsedJson).field("bookName").isEqualTo("foo");
@@ -3800,7 +3801,7 @@ inside the application (e.g. scheduler)</p>
  then:
   ContractVerifierMessage response = contractVerifierMessaging.receive('activemq:output')
   assert response != null
-  response.getHeader('BOOK-NAME')  == 'foo'
+  response.getHeader('BOOK-NAME')?.toString()  == 'foo'
  and:
   DocumentContext parsedJson = JsonPath.parse(contractVerifierObjectMapper.writeValueAsString(response.payload))
   assertThatJson(parsedJson).field("bookName").isEqualTo("foo")
@@ -3857,7 +3858,8 @@ inside the application (e.g. scheduler)</p>
 // then:
  ContractVerifierMessage response = contractVerifierMessaging.receive("jms:output");
  assertThat(response).isNotNull();
- assertThat(response.getHeader("BOOK-NAME")).isEqualTo("foo");
+ assertThat(response.getHeader("BOOK-NAME")).isNotNull();
+ assertThat(response.getHeader("BOOK-NAME").toString()).isEqualTo("foo");
 // and:
  DocumentContext parsedJson = JsonPath.parse(contractVerifierObjectMapper.writeValueAsString(response.getPayload()));
  assertThatJson(parsedJson).field("bookName").isEqualTo("foo");
@@ -3882,7 +3884,7 @@ when:
 then:
    ContractVerifierMessage response = contractVerifierMessaging.receive('jms:output')
    assert response !- null
-   response.getHeader('BOOK-NAME')  == 'foo'
+   response.getHeader('BOOK-NAME')?.toString()  == 'foo'
 and:
    DocumentContext parsedJson = JsonPath.parse(contractVerifierObjectMapper.writeValueAsString(response.payload))
    assertThatJson(parsedJson).field("bookName").isEqualTo("foo")