diff --git a/modules/openapi-generator/src/main/resources/dart2/api_client.mustache b/modules/openapi-generator/src/main/resources/dart2/api_client.mustache
index d7f90713d5fc..822fe2912c8f 100644
--- a/modules/openapi-generator/src/main/resources/dart2/api_client.mustache
+++ b/modules/openapi-generator/src/main/resources/dart2/api_client.mustache
@@ -127,7 +127,7 @@ class ApiClient {
       switch(method) {
         case 'POST': return await _client.post(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PUT': return await _client.put(uri, headers: nullableHeaderParams, body: msgBody,);
-        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams,);
+        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PATCH': return await _client.patch(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'HEAD': return await _client.head(uri, headers: nullableHeaderParams,);
         case 'GET': return await _client.get(uri, headers: nullableHeaderParams,);
diff --git a/samples/openapi3/client/petstore/dart2/petstore_client_lib/lib/api_client.dart b/samples/openapi3/client/petstore/dart2/petstore_client_lib/lib/api_client.dart
index 37b6acfd4c6e..8833c281a295 100644
--- a/samples/openapi3/client/petstore/dart2/petstore_client_lib/lib/api_client.dart
+++ b/samples/openapi3/client/petstore/dart2/petstore_client_lib/lib/api_client.dart
@@ -120,7 +120,7 @@ class ApiClient {
       switch(method) {
         case 'POST': return await _client.post(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PUT': return await _client.put(uri, headers: nullableHeaderParams, body: msgBody,);
-        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams,);
+        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PATCH': return await _client.patch(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'HEAD': return await _client.head(uri, headers: nullableHeaderParams,);
         case 'GET': return await _client.get(uri, headers: nullableHeaderParams,);
diff --git a/samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/api_client.dart b/samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/api_client.dart
index b64c73d9772e..48ed9288e656 100644
--- a/samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/api_client.dart
+++ b/samples/openapi3/client/petstore/dart2/petstore_client_lib_fake/lib/api_client.dart
@@ -123,7 +123,7 @@ class ApiClient {
       switch(method) {
         case 'POST': return await _client.post(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PUT': return await _client.put(uri, headers: nullableHeaderParams, body: msgBody,);
-        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams,);
+        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PATCH': return await _client.patch(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'HEAD': return await _client.head(uri, headers: nullableHeaderParams,);
         case 'GET': return await _client.get(uri, headers: nullableHeaderParams,);
diff --git a/samples/openapi3/client/petstore/dart2/petstore_json_serializable_client_lib_fake/lib/api_client.dart b/samples/openapi3/client/petstore/dart2/petstore_json_serializable_client_lib_fake/lib/api_client.dart
index 02f98fe17a4c..8a3db870ecaa 100644
--- a/samples/openapi3/client/petstore/dart2/petstore_json_serializable_client_lib_fake/lib/api_client.dart
+++ b/samples/openapi3/client/petstore/dart2/petstore_json_serializable_client_lib_fake/lib/api_client.dart
@@ -123,7 +123,7 @@ class ApiClient {
       switch(method) {
         case 'POST': return await _client.post(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PUT': return await _client.put(uri, headers: nullableHeaderParams, body: msgBody,);
-        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams,);
+        case 'DELETE': return await _client.delete(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'PATCH': return await _client.patch(uri, headers: nullableHeaderParams, body: msgBody,);
         case 'HEAD': return await _client.head(uri, headers: nullableHeaderParams,);
         case 'GET': return await _client.get(uri, headers: nullableHeaderParams,);