diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache
index 067c32dbbdf..7b3cc1f9465 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache
@@ -115,7 +115,7 @@ public interface {{classname}} {
     }
 
     // Override this method
-    {{#jdk8-default-interface}}default {{/jdk8-default-interface}} {{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#allParams}}{{^isFile}}{{^isBodyParam}}{{>optionalDataType}}{{/isBodyParam}}{{#isBodyParam}}{{^reactive}}{{{dataType}}}{{/reactive}}{{#reactive}}{{^isListContainer}}Mono{{/isListContainer}}{{#isListContainer}}Flux{{/isListContainer}}<{{{baseType}}}>{{/reactive}}{{/isBodyParam}}{{/isFile}}{{#isFile}}MultipartFile{{/isFile}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}}{{#reactive}}{{#hasParams}}, {{/hasParams}}ServerWebExchange exchange{{/reactive}}) {
+    {{#jdk8-default-interface}}default {{/jdk8-default-interface}} {{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#allParams}}{{^isFile}}{{^isBodyParam}}{{>optionalDataType}}{{/isBodyParam}}{{#isBodyParam}}{{^reactive}}{{{dataType}}}{{/reactive}}{{#reactive}}{{^isListContainer}}Mono{{/isListContainer}}{{#isListContainer}}Flux{{/isListContainer}}<{{{baseType}}}>{{/reactive}}{{/isBodyParam}}{{/isFile}}{{#isFile}}MultipartFile{{/isFile}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}}{{#reactive}}{{#hasParams}}, {{/hasParams}}ServerWebExchange exchange{{/reactive}}){{#unhandledException}} throws Exception{{/unhandledException}} {
         {{/delegate-method}}
         {{^isDelegate}}
         {{>methodBody}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache
index 15a51ceb99e..a055cb86d5a 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache
@@ -52,7 +52,7 @@ public interface {{classname}}Delegate {
      */
     {{#jdk8-default-interface}}default {{/jdk8-default-interface}}{{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#allParams}}{{^isFile}}{{^isBodyParam}}{{>optionalDataType}}{{/isBodyParam}}{{#isBodyParam}}{{^reactive}}{{{dataType}}}{{/reactive}}{{#reactive}}{{^isListContainer}}Mono{{/isListContainer}}{{#isListContainer}}Flux{{/isListContainer}}<{{{baseType}}}>{{/reactive}}{{/isBodyParam}}{{/isFile}}{{#isFile}}MultipartFile{{/isFile}} {{paramName}}{{#hasMore}},
         {{/hasMore}}{{/allParams}}{{#reactive}}{{#hasParams}},
-        {{/hasParams}}ServerWebExchange exchange{{/reactive}}){{^jdk8-default-interface}};{{/jdk8-default-interface}}{{#jdk8-default-interface}} {
+        {{/hasParams}}ServerWebExchange exchange{{/reactive}}){{#unhandledException}} throws Exception{{/unhandledException}}{{^jdk8-default-interface}};{{/jdk8-default-interface}}{{#jdk8-default-interface}} {
         {{>methodBody}}
     }{{/jdk8-default-interface}}