diff --git a/packages/openapi-response-validator/index.ts b/packages/openapi-response-validator/index.ts
index e306013d..f8daa97e 100644
--- a/packages/openapi-response-validator/index.ts
+++ b/packages/openapi-response-validator/index.ts
@@ -3,6 +3,7 @@ import Ajv, {
   Format,
   ErrorObject,
   ValidateFunction,
+  Options,
 } from 'ajv';
 import { IJsonSchema, OpenAPIV2, OpenAPIV3 } from 'openapi-types';
 
@@ -37,6 +38,7 @@ export interface OpenAPIResponseValidatorArgs {
     openAPIResponseValidatorValidationError: OpenAPIResponseValidatorError,
     ajvError: ErrorObject
   ): any;
+  ajvOptions?: Options;
 }
 
 export interface OpenAPIResponseValidatorError {
@@ -82,6 +84,7 @@ export default class OpenAPIResponseValidator
       strict: false,
       // @ts-ignore TODO get Ajv updated to account for logger
       logger: false,
+      ...(args.ajvOptions || {}),
     });
 
     this.errorMapper = errorTransformer
diff --git a/packages/openapi-response-validator/test/data-driven/fail-with-discriminating-errors-on-oneof.js b/packages/openapi-response-validator/test/data-driven/fail-with-discriminating-errors-on-oneof.js
new file mode 100644
index 00000000..6f09520c
--- /dev/null
+++ b/packages/openapi-response-validator/test/data-driven/fail-with-discriminating-errors-on-oneof.js
@@ -0,0 +1,59 @@
+module.exports = {
+  constructorArgs: {
+    ajvOptions: {
+      discriminator: true
+    },
+    responses: {
+      200: {
+        schema: {
+          oneOf: [
+            {
+              type: 'object',
+              properties: {
+                foo: {
+                  type: 'string',
+                },
+                my_type: {
+                  type: 'string',
+                  enum: ['foo']
+                }
+              },
+              required: ['foo', 'my_type'],
+            },
+            {
+
+              type: 'object',
+              properties: {
+                bar: {
+                  type: 'string',
+                },
+                my_type: {
+                  type: 'string',
+                  enum: ['bar']
+                }
+              },
+              required: ['bar', 'my_type'],
+            }
+          ],
+          discriminator: {
+            propertyName: 'my_type'
+          }
+        }
+      }
+    },
+  },
+  inputStatusCode: 200,
+  inputResponseBody: {
+    my_type: 'foo',
+  },
+  expectedValidationError: {
+    message: 'The response was not valid.',
+    errors:[
+      {
+        errorCode: 'required.openapi.responseValidation',
+        message: "must have required property 'foo'",
+        path: 'response'
+      }
+    ]
+  }
+}
diff --git a/packages/openapi-response-validator/test/data-driven/fail-with-indisriminating-errors-on-oneof.js b/packages/openapi-response-validator/test/data-driven/fail-with-indisriminating-errors-on-oneof.js
new file mode 100644
index 00000000..292bdbea
--- /dev/null
+++ b/packages/openapi-response-validator/test/data-driven/fail-with-indisriminating-errors-on-oneof.js
@@ -0,0 +1,71 @@
+module.exports = {
+  constructorArgs: {
+    responses: {
+      200: {
+        schema: {
+          oneOf: [
+            {
+              type: 'object',
+              properties: {
+                foo: {
+                  type: 'string',
+                },
+                my_type: {
+                  type: 'string',
+                  enum: ['foo']
+                }
+              },
+              required: ['foo', 'my_type'],
+            },
+            {
+
+              type: 'object',
+              properties: {
+                bar: {
+                  type: 'string',
+                },
+                my_type: {
+                  type: 'string',
+                  enum: ['bar']
+                }
+              },
+              required: ['bar', 'my_type'],
+            }
+          ],
+          discriminator: {
+            propertyName: 'my_type'
+          }
+        }
+      }
+    }
+  },
+  inputStatusCode: 200,
+  inputResponseBody: {
+    my_type: 'foo',
+  },
+  expectedValidationError: {
+    message: 'The response was not valid.',
+    errors:[
+      {
+        errorCode: 'required.openapi.responseValidation',
+        message: "must have required property 'foo'",
+        path: 'response'
+      },
+      {
+        errorCode: 'required.openapi.responseValidation',
+        message: "must have required property 'bar'",
+        path: 'response'
+      },
+      {
+        errorCode: 'enum.openapi.responseValidation',
+        message: 'must be equal to one of the allowed values',
+        path: 'my_type'
+      },
+      {
+        errorCode: 'oneOf.openapi.responseValidation',
+        message: 'must match exactly one schema in oneOf',
+        path: 'response'
+      }
+    ]
+  }
+}