diff --git a/python/src/deltachat/account.py b/python/src/deltachat/account.py
index e6749c7ba..d6512e369 100644
--- a/python/src/deltachat/account.py
+++ b/python/src/deltachat/account.py
@@ -284,9 +284,9 @@ class Account:
         :returns: :class:`deltachat.contact.Contact` instance.
         """
         (name, addr) = self.get_contact_addr_and_name(obj, name)
-        name = as_dc_charpointer(name)
-        addr = as_dc_charpointer(addr)
-        contact_id = lib.dc_create_contact(self._dc_context, name, addr)
+        name_c = as_dc_charpointer(name)
+        addr_c = as_dc_charpointer(addr)
+        contact_id = lib.dc_create_contact(self._dc_context, name_c, addr_c)
         return Contact(self, contact_id)
 
     def get_contact(self, obj) -> Optional[Contact]:
@@ -363,12 +363,12 @@ class Account:
         :returns: list of :class:`deltachat.contact.Contact` objects.
         """
         flags = 0
-        query = as_dc_charpointer(query)
+        query_c = as_dc_charpointer(query)
         if only_verified:
             flags |= const.DC_GCL_VERIFIED_ONLY
         if with_self:
             flags |= const.DC_GCL_ADD_SELF
-        dc_array = ffi.gc(lib.dc_get_contacts(self._dc_context, flags, query), lib.dc_array_unref)
+        dc_array = ffi.gc(lib.dc_get_contacts(self._dc_context, flags, query_c), lib.dc_array_unref)
         return list(iter_array(dc_array, lambda x: Contact(self, x)))
 
     def get_fresh_messages(self) -> Generator[Message, None, None]:
diff --git a/python/src/deltachat/chat.py b/python/src/deltachat/chat.py
index 77fac073d..e666b6cd4 100644
--- a/python/src/deltachat/chat.py
+++ b/python/src/deltachat/chat.py
@@ -162,8 +162,8 @@ class Chat:
         :param name: as a unicode string.
         :returns: True on success, False otherwise
         """
-        name = as_dc_charpointer(name)
-        return bool(lib.dc_set_chat_name(self.account._dc_context, self.id, name))
+        name_c = as_dc_charpointer(name)
+        return bool(lib.dc_set_chat_name(self.account._dc_context, self.id, name_c))
 
     def get_color(self):
         """return the color of the chat.