diff --git a/services/chwriter/channel.py b/services/chwriter/channel.py
index 7456bac2bf2fec2c702cd132c3f8b020059286fe..c026cf3f3556de325185d1bfcb819a62026cd5a9 100644
--- a/services/chwriter/channel.py
+++ b/services/chwriter/channel.py
@@ -36,13 +36,7 @@ class Channel(object):
         self.last_updated = perf_counter()
         self.last_flushed = perf_counter()
         self.flushing = False
-        self.url = "http://%s/?user=%s&password=%s&database=%s&query=%s" % (
-            address,
-            config.clickhouse.rw_user,
-            config.clickhouse.rw_password or "",
-            db,
-            self.encoded_sql,
-        )
+        self.url = "http://%s/?database=%s&query=%s" % (address, db, self.encoded_sql)
 
     def feed(self, data: bytes):
         n = data.count(b"\n")