diff --git a/core/src/test/java/org/openapitools/openapidiff/core/RequestDiffTest.java b/core/src/test/java/org/openapitools/openapidiff/core/RequestDiffTest.java
index 31b76f76..8561d13a 100644
--- a/core/src/test/java/org/openapitools/openapidiff/core/RequestDiffTest.java
+++ b/core/src/test/java/org/openapitools/openapidiff/core/RequestDiffTest.java
@@ -1,5 +1,6 @@
 package org.openapitools.openapidiff.core;
 
+import static org.openapitools.openapidiff.core.TestUtils.assertOpenApiBackwardIncompatible;
 import static org.openapitools.openapidiff.core.TestUtils.assertOpenApiChangedEndpoints;
 
 import org.junit.jupiter.api.Test;
@@ -12,4 +13,9 @@ public class RequestDiffTest {
   public void testDiffDifferent() {
     assertOpenApiChangedEndpoints(OPENAPI_DOC1, OPENAPI_DOC2);
   }
+
+  @Test
+  public void issue412() {
+    assertOpenApiBackwardIncompatible("issue-412_1.yaml", "issue-412_2.yaml");
+  }
 }
diff --git a/core/src/test/resources/issue-412_1.yaml b/core/src/test/resources/issue-412_1.yaml
new file mode 100644
index 00000000..8034cc6a
--- /dev/null
+++ b/core/src/test/resources/issue-412_1.yaml
@@ -0,0 +1,34 @@
+openapi: "3.0.1"
+info:
+  title: "Public Api"
+  description: ""
+  version: "2022-08-23T16:17:54Z"
+servers:
+  - url: "https://someurl"
+    variables:
+      basePath:
+        default: "/v1"
+paths:
+  /auth:
+    post:
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/AuthRequest"
+        required: true
+      responses:
+        200:
+          description: OK
+components:
+  schemas:
+    AuthRequest:
+      required:
+        - "Username"
+        - "Password"
+      type: "object"
+      properties:
+        Username:
+          type: "string"
+        Password:
+          type: "string"
\ No newline at end of file
diff --git a/core/src/test/resources/issue-412_2.yaml b/core/src/test/resources/issue-412_2.yaml
new file mode 100644
index 00000000..07bb3f55
--- /dev/null
+++ b/core/src/test/resources/issue-412_2.yaml
@@ -0,0 +1,31 @@
+openapi: "3.0.1"
+info:
+  title: "Public Api"
+  description: ""
+  version: "2022-08-23T16:17:54Z"
+servers:
+  - url: "https://someurl"
+    variables:
+      basePath:
+        default: "/v1"
+paths:
+  /auth:
+    post:
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/AuthRequest"
+        required: true
+      responses:
+        200:
+          description: OK
+components:
+  schemas:
+    AuthRequest:
+      required:
+        - "Username"
+      type: "object"
+      properties:
+        Username:
+          type: "string"
\ No newline at end of file