diff --git a/src/frostfs_testlib/http/http_client.py b/src/frostfs_testlib/http/http_client.py
index 6008989..a3e3e54 100644
--- a/src/frostfs_testlib/http/http_client.py
+++ b/src/frostfs_testlib/http/http_client.py
@@ -84,12 +84,12 @@ class HttpClient:
         return request_body
 
     @classmethod
-    def _parse_files(cls, files: Mapping | Sequence | None) -> str | None:
-        if not files:
-            return None
-
+    def _parse_files(cls, files: Mapping | Sequence | None) -> dict:
         filepaths = {}
 
+        if not files:
+            return filepaths
+
         if isinstance(files, Sequence):
             items = files
         elif isinstance(files, Mapping):
@@ -100,11 +100,10 @@ class HttpClient:
         for name, file in items:
             if isinstance(file, io.IOBase):
                 filepaths[name] = file.name
-
-            if isinstance(file, tuple):
+            elif isinstance(file, Sequence):
                 filepaths[name] = file[1].name
 
-        return json.dumps(filepaths, default=str, indent=4)
+        return filepaths
 
     @classmethod
     def _attach_response(cls, response: httpx.Response, **kwargs):
@@ -128,23 +127,18 @@ class HttpClient:
             + f"Response Headers: {response_headers}\n\n"
             + (f"Response Body: {response_body}\n\n" if response_body else "")
         )
-        curl_request = cls._create_curl_request(request.url, request.method, request.headers, request_body, files)
+        curl_request = cls._create_curl_request(request.url, request.method, request.headers, request_body, request_files)
 
         reporter.attach(report, "Requests Info")
         reporter.attach(curl_request, "CURL")
 
     @classmethod
-    def _create_curl_request(cls, url: str, method: str, headers: httpx.Headers, data: str, files: dict = None) -> str:
+    def _create_curl_request(cls, url: str, method: str, headers: httpx.Headers, data: str, files: dict) -> str:
         headers = " ".join(f'-H "{name.title()}: {value}"' for name, value in headers.items())
         data = f" -d '{data}'" if data else ""
 
-        if files:
-            for name, file in files.items():
-                if isinstance(file, io.IOBase):
-                    data += f' -F "{name}=@{file.name}"'
-
-                if isinstance(file, tuple):
-                    data += f' -F "{name}=@{file[1].name}"'
+        for name, path in files.items():
+            data += f' -F "{name}=@{path}"'
 
         # Option -k means no verify SSL
         return f"curl {url} -X {method} {headers}{data} -k"