diff --git a/packages/oas/src/utils/params.ts b/packages/oas/src/utils/params.ts
index 24a6b1a5..9b2fd2b4 100644
--- a/packages/oas/src/utils/params.ts
+++ b/packages/oas/src/utils/params.ts
@@ -1,19 +1,28 @@
-import type { ParameterObject } from '../types';
-import type { OpenAPI } from '@har-sdk/core';
+import { ParameterObject } from '../types';
+import { getOperation } from './operation';
+import { OpenAPI } from '@har-sdk/core';
 
-const isParameter = (param: unknown): param is ParameterObject =>
-  param && typeof param === 'object' && 'in' in param && 'name' in param;
+const assertDereferencedParam = (param: unknown): param is ParameterObject => {
+  const isReference = !!param && typeof param === 'object' && '$ref' in param;
 
-const toParameters = (param: unknown): ParameterObject[] =>
-  Array.isArray(param) ? param.filter(isParameter) : [];
+  if (isReference) {
+    throw new Error('Specification document is expected to be dereferenced.');
+  }
+
+  return !isReference;
+};
 
 export const getParameters = (
   spec: OpenAPI.Document,
   path: string,
   method: string
 ): ParameterObject[] => {
-  const pathParams = toParameters(spec.paths[path]?.parameters);
-  const operationParams = toParameters(spec.paths[path]?.[method]?.parameters);
+  const pathParams = [...(spec.paths[path]?.parameters ?? [])].filter(
+    assertDereferencedParam
+  );
+  const operationParams = [
+    ...(getOperation(spec, path, method)?.parameters ?? [])
+  ].filter(assertDereferencedParam);
 
   const combinedParams = new Map<string, ParameterObject>(
     pathParams.map((x) => [`${x.in}:${x.name}`, x])
diff --git a/packages/oas/tests/fixtures/path-item.params.resolution.oas.result.json b/packages/oas/tests/fixtures/path-item.params.resolution.oas.result.json
index 32b8bec3..94d4609f 100644
--- a/packages/oas/tests/fixtures/path-item.params.resolution.oas.result.json
+++ b/packages/oas/tests/fixtures/path-item.params.resolution.oas.result.json
@@ -6,17 +6,8 @@
     "headersSize": 0,
     "httpVersion": "HTTP/1.1",
     "method": "GET",
-    "queryString": [
-      {
-        "name": "lat",
-        "value": "42"
-      },
-      {
-        "name": "lng",
-        "value": "42"
-      }
-    ],
-    "url": "https://brokencrystals.com/locations?lat=42&lng=42"
+    "queryString": [],
+    "url": "https://brokencrystals.com/users/42"
   },
   {
     "bodySize": 0,
@@ -25,17 +16,8 @@
     "headersSize": 0,
     "httpVersion": "HTTP/1.1",
     "method": "POST",
-    "queryString": [
-      {
-        "name": "lat",
-        "value": "lorem"
-      },
-      {
-        "name": "lng",
-        "value": "lorem"
-      }
-    ],
-    "url": "https://brokencrystals.com/locations?lat=lorem&lng=lorem"
+    "queryString": [],
+    "url": "https://brokencrystals.com/users/lorem"
   },
   {
     "bodySize": 0,
@@ -44,20 +26,7 @@
     "headersSize": 0,
     "httpVersion": "HTTP/1.1",
     "method": "PUT",
-    "queryString": [
-      {
-        "name": "lat",
-        "value": "42"
-      },
-      {
-        "name": "lng",
-        "value": "42"
-      },
-      {
-        "name": "type",
-        "value": "lorem"
-      }
-    ],
-    "url": "https://brokencrystals.com/locations?lat=42&lng=42&type=lorem"
+    "queryString": [],
+    "url": "https://brokencrystals.com/users/lorem"
   }
 ]
diff --git a/packages/oas/tests/fixtures/path-item.params.resolution.oas.yaml b/packages/oas/tests/fixtures/path-item.params.resolution.oas.yaml
index 1d166024..281a3796 100644
--- a/packages/oas/tests/fixtures/path-item.params.resolution.oas.yaml
+++ b/packages/oas/tests/fixtures/path-item.params.resolution.oas.yaml
@@ -1,18 +1,15 @@
 openapi: 3.0.3
 info:
-  title: locations
+  title: users/{id}
   version: '1.0'
 servers:
   - url: https://brokencrystals.com
 paths:
-  /locations:
+  /users/{id}:
     parameters:
-      - in: query
-        name: lat
-        schema:
-          type: number
-      - in: query
-        name: lng
+      - in: path
+        name: id
+        required: true
         schema:
           type: number
     get:
@@ -21,27 +18,25 @@ paths:
           description: ''
     post:
       parameters:
-        - in: query
-          name: lat
-          schema:
-            type: string
-        - in: query
-          name: lng
-          schema:
-            type: string
         - in: path
-          name: lng
+          name: id
+          required: true
           schema:
-            type: integer
+            type: string
       responses:
         '200':
           description: ''
     put:
       parameters:
-        - in: query
-          name: type
-          schema:
-            type: string
+        - $ref: '#/components/parameters/userid'
       responses:
         '200':
           description: ''
+components:
+  parameters:
+    userid:
+      in: path
+      name: id
+      required: true
+      schema:
+        type: string