diff --git a/scilog/httpclient.py b/scilog/httpclient.py
index 01b226a..b8e0d0c 100644
--- a/scilog/httpclient.py
+++ b/scilog/httpclient.py
@@ -11,10 +11,10 @@ def authenticated(func):
         if not issubclass(type(args[0]), HttpClient):
             raise AttributeError("First argument must be an instance of HttpClient")
         if "headers" in kwargs:
-            kwargs["headers"]["Authorization"] = args[0].token
+            kwargs["headers"] = kwargs["headers"].copy()
         else:
             kwargs["headers"] = {}
-            kwargs["headers"]["Authorization"] = args[0].token
+        kwargs["headers"]["Authorization"] = args[0].token
 
         return func(*args, **kwargs)
     return authenticated_call
diff --git a/scilog/scilog.py b/scilog/scilog.py
index 798441a..faf57c7 100644
--- a/scilog/scilog.py
+++ b/scilog/scilog.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from .authclient import AuthMixin, AuthError, HEADER_JSON
-from .mkfilt import make_filter
 from .httpclient import HttpClient
 from .snippet import Snippet, Basesnippet, Paragraph
 from typing import TypeVar, Union, List, Type, get_type_hints
@@ -51,17 +50,15 @@ class SciLog():
         url = self.http_client.address + "/basesnippets"
         snippet = Paragraph()
         snippet.import_dict(kwargs)
-        snippet.textcontent = msg     
+        snippet.textcontent = msg
         payload = snippet.to_dict(include_none=False)  
-        headers = HEADER_JSON.copy()
-        return Basesnippet.from_http_response(self.http_client.post_request(url, payload=payload, headers=headers))
+        return Basesnippet.from_http_response(self.http_client.post_request(url, payload=payload, headers=HEADER_JSON))
 
     @pinned_to_logbook(["parentId", "ownerGroup", "accessGroups"])
     def post_snippet(self, **kwargs):
         url = self.http_client.address + "/basesnippets"
         payload = kwargs
-        headers = HEADER_JSON.copy()
-        return Basesnippet.from_http_response(self.http_client.post_request(url, payload=payload, headers=headers))
+        return Basesnippet.from_http_response(self.http_client.post_request(url, payload=payload, headers=HEADER_JSON))
 
     def get_logbooks(self, **kwargs):
         url = self.http_client.address + "/basesnippets"
@@ -69,9 +66,11 @@ class SciLog():
         snippet.import_dict(kwargs)
         snippet.snippetType = "logbook"
         params = self.http_client.make_filter(where=snippet.to_dict(include_none=False))
-        headers = HEADER_JSON.copy()
-        return Basesnippet.from_http_response(self.http_client.get_request(url, params=params, headers=headers))
+        return Basesnippet.from_http_response(self.http_client.get_request(url, params=params, headers=HEADER_JSON))
 
 
 class SciLogAuthError(AuthError):
     pass
+
+
+