diff --git a/springdoc-openapi-common/src/main/java/org/springdoc/api/AbstractOpenApiResource.java b/springdoc-openapi-common/src/main/java/org/springdoc/api/AbstractOpenApiResource.java
index 848eb49a8..665ffb3ab 100644
--- a/springdoc-openapi-common/src/main/java/org/springdoc/api/AbstractOpenApiResource.java
+++ b/springdoc-openapi-common/src/main/java/org/springdoc/api/AbstractOpenApiResource.java
@@ -42,6 +42,7 @@
 import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
+import java.util.TreeSet;
 import java.util.concurrent.CopyOnWriteArraySet;
 import java.util.concurrent.Executors;
 import java.util.stream.Collectors;
@@ -397,7 +398,7 @@ protected void calculatePath(HandlerMethod handlerMethod,
 		routerOperation = customizeRouterOperation(routerOperation, handlerMethod);
 
 		String operationPath = routerOperation.getPath();
-		Set<RequestMethod> requestMethods = new HashSet<>(Arrays.asList(routerOperation.getMethods()));
+		Set<RequestMethod> requestMethods = new TreeSet<>(Arrays.asList(routerOperation.getMethods()));
 		io.swagger.v3.oas.annotations.Operation apiOperation = routerOperation.getOperation();
 		String[] methodConsumes = routerOperation.getConsumes();
 		String[] methodProduces = routerOperation.getProduces();
diff --git a/springdoc-openapi-javadoc/src/test/java/test/org/springdoc/api/app167/HelloController.java b/springdoc-openapi-javadoc/src/test/java/test/org/springdoc/api/app167/HelloController.java
new file mode 100644
index 000000000..af21283cf
--- /dev/null
+++ b/springdoc-openapi-javadoc/src/test/java/test/org/springdoc/api/app167/HelloController.java
@@ -0,0 +1,34 @@
+/*
+ *
+ *  * Copyright 2019-2020 the original author or authors.
+ *  *
+ *  * Licensed under the Apache License, Version 2.0 (the "License");
+ *  * you may not use this file except in compliance with the License.
+ *  * You may obtain a copy of the License at
+ *  *
+ *  *      https://www.apache.org/licenses/LICENSE-2.0
+ *  *
+ *  * Unless required by applicable law or agreed to in writing, software
+ *  * distributed under the License is distributed on an "AS IS" BASIS,
+ *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  * See the License for the specific language governing permissions and
+ *  * limitations under the License.
+ *
+ */
+
+package test.org.springdoc.api.app167;
+
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * The type Hello controller.
+ */
+@RestController("/api")
+public class HelloController {
+
+    @RequestMapping("/process")
+    public void process() {
+
+    }
+}
\ No newline at end of file
diff --git a/springdoc-openapi-javadoc/src/test/java/test/org/springdoc/api/app167/SpringDocApp167Test.java b/springdoc-openapi-javadoc/src/test/java/test/org/springdoc/api/app167/SpringDocApp167Test.java
new file mode 100644
index 000000000..815c33c28
--- /dev/null
+++ b/springdoc-openapi-javadoc/src/test/java/test/org/springdoc/api/app167/SpringDocApp167Test.java
@@ -0,0 +1,36 @@
+/*
+ *
+ *  * Copyright 2019-2020 the original author or authors.
+ *  *
+ *  * Licensed under the Apache License, Version 2.0 (the "License");
+ *  * you may not use this file except in compliance with the License.
+ *  * You may obtain a copy of the License at
+ *  *
+ *  *      https://www.apache.org/licenses/LICENSE-2.0
+ *  *
+ *  * Unless required by applicable law or agreed to in writing, software
+ *  * distributed under the License is distributed on an "AS IS" BASIS,
+ *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  * See the License for the specific language governing permissions and
+ *  * limitations under the License.
+ *
+ */
+
+package test.org.springdoc.api.app167;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import test.org.springdoc.api.AbstractSpringDocTest;
+
+/**
+ * The type Spring doc app 167 test.
+ */
+public class SpringDocApp167Test extends AbstractSpringDocTest {
+
+    /**
+     * The type Spring doc test app.
+     */
+    @SpringBootApplication
+    static class SpringDocTestApp {
+    }
+}
\ No newline at end of file
diff --git a/springdoc-openapi-javadoc/src/test/resources/results/app167.json b/springdoc-openapi-javadoc/src/test/resources/results/app167.json
new file mode 100644
index 000000000..34473523f
--- /dev/null
+++ b/springdoc-openapi-javadoc/src/test/resources/results/app167.json
@@ -0,0 +1,101 @@
+{
+    "openapi": "3.0.1",
+    "info": {
+        "title": "OpenAPI definition",
+        "version": "v0"
+    },
+    "servers": [
+        {
+            "url": "http://localhost",
+            "description": "Generated server url"
+        }
+    ],
+    "tags": [
+        {
+            "name": "hello-controller",
+            "description": "The type Hello controller."
+        }
+    ],
+    "paths": {
+        "/process": {
+            "get": {
+                "tags": [
+                    "hello-controller"
+                ],
+                "operationId": "process",
+                "responses": {
+                    "200": {
+                        "description": "OK"
+                    }
+                }
+            },
+            "put": {
+                "tags": [
+                    "hello-controller"
+                ],
+                "operationId": "process_3",
+                "responses": {
+                    "200": {
+                        "description": "OK"
+                    }
+                }
+            },
+            "post": {
+                "tags": [
+                    "hello-controller"
+                ],
+                "operationId": "process_2",
+                "responses": {
+                    "200": {
+                        "description": "OK"
+                    }
+                }
+            },
+            "delete": {
+                "tags": [
+                    "hello-controller"
+                ],
+                "operationId": "process_5",
+                "responses": {
+                    "200": {
+                        "description": "OK"
+                    }
+                }
+            },
+            "options": {
+                "tags": [
+                    "hello-controller"
+                ],
+                "operationId": "process_6",
+                "responses": {
+                    "200": {
+                        "description": "OK"
+                    }
+                }
+            },
+            "head": {
+                "tags": [
+                    "hello-controller"
+                ],
+                "operationId": "process_1",
+                "responses": {
+                    "200": {
+                        "description": "OK"
+                    }
+                }
+            },
+            "patch": {
+                "tags": [
+                    "hello-controller"
+                ],
+                "operationId": "process_4",
+                "responses": {
+                    "200": {
+                        "description": "OK"
+                    }
+                }
+            }
+        }
+    },
+    "components": {}
+}
\ No newline at end of file