diff --git a/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/FakeApi.java
index 0061b47d30c4..5cae0c6dff7d 100644
--- a/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -77,7 +77,8 @@ public void setCustomBaseUrl(String customBaseUrl) {
      * @return Call to execute
      * @throws ApiException If fail to serialize the request body object
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td>  </td><td>  -  </td></tr>
      </table>
@@ -138,7 +139,8 @@ private okhttp3.Call getPetById0ValidateBeforeCall(final ApiCallback _callback)
      * @return Object
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td>  </td><td>  -  </td></tr>
      </table>
@@ -154,7 +156,8 @@ public Object getPetById0() throws ApiException {
      * @return ApiResponse&lt;Object&gt;
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td>  </td><td>  -  </td></tr>
      </table>
@@ -172,7 +175,8 @@ public ApiResponse<Object> getPetById0WithHttpInfo() throws ApiException {
      * @return The request call
      * @throws ApiException If fail to process the API call, e.g. serializing the request body object
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td>  </td><td>  -  </td></tr>
      </table>
diff --git a/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/PetApi.java
index fe38654e0709..cd1f819b5420 100644
--- a/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/okhttp-gson-3.1-duplicated-operationid/src/main/java/org/openapitools/client/api/PetApi.java
@@ -78,7 +78,8 @@ public void setCustomBaseUrl(String customBaseUrl) {
      * @return Call to execute
      * @throws ApiException If fail to serialize the request body object
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
         <tr><td> 400 </td><td> Invalid ID supplied </td><td>  -  </td></tr>
@@ -149,7 +150,8 @@ private okhttp3.Call getPetByIdValidateBeforeCall(Long petId, final ApiCallback
      * @return Object
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
         <tr><td> 400 </td><td> Invalid ID supplied </td><td>  -  </td></tr>
@@ -168,7 +170,8 @@ public Object getPetById(Long petId) throws ApiException {
      * @return ApiResponse&lt;Object&gt;
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
         <tr><td> 400 </td><td> Invalid ID supplied </td><td>  -  </td></tr>
@@ -189,7 +192,8 @@ public ApiResponse<Object> getPetByIdWithHttpInfo(Long petId) throws ApiExceptio
      * @return The request call
      * @throws ApiException If fail to process the API call, e.g. serializing the request body object
      * @http.response.details
-     <table summary="Response Details" border="1">
+     <table border="1">
+       <caption>Response Details</caption>
         <tr><td> Status Code </td><td> Description </td><td> Response Headers </td></tr>
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
         <tr><td> 400 </td><td> Invalid ID supplied </td><td>  -  </td></tr>