diff --git a/packages/mock/src/faker/getters/combine.ts b/packages/mock/src/faker/getters/combine.ts
index 7af7cbe0f..f22aca93d 100644
--- a/packages/mock/src/faker/getters/combine.ts
+++ b/packages/mock/src/faker/getters/combine.ts
@@ -116,6 +116,14 @@ export const combineSchemasMock = ({
       currentValue = `${currentValue ? `${currentValue},` : ''}${itemResolvedValue.value}`;
     }
 
+    if (
+      resolvedValue.type === undefined &&
+      currentValue &&
+      separator === 'allOf'
+    ) {
+      currentValue = `...${currentValue}`;
+    }
+
     const isObjectBounds =
       !combine ||
       (['oneOf', 'anyOf'].includes(combine.separator) && separator === 'allOf');
diff --git a/tests/specifications/all-of.yaml b/tests/specifications/all-of.yaml
index ff726cda2..bf3fd4c82 100644
--- a/tests/specifications/all-of.yaml
+++ b/tests/specifications/all-of.yaml
@@ -27,6 +27,22 @@ paths:
                   - type: object
                     required:
                       - color
+  /rested-ref-in-all-of-pets:
+    get:
+      operationId: getNestedRefInAllOfPets
+      tags:
+        - pets
+      description: |-
+        Nested ref in allOf pets.
+      responses:
+        '200':
+          description: User
+          content:
+            application/json:
+              schema:
+                allOf:
+                  - $ref: '#/components/schemas/PetRef'
+                  - $ref: '#/components/schemas/PetDetail'
 
 components:
   schemas:
@@ -48,3 +64,5 @@ components:
       properties:
         tag:
           type: string
+    PetRef:
+      $ref: '#/components/schemas/Pet'