diff --git a/src/shrpx_connection.cc b/src/shrpx_connection.cc
index 95e1c320..bc64f1a0 100644
--- a/src/shrpx_connection.cc
+++ b/src/shrpx_connection.cc
@@ -61,9 +61,6 @@ Connection::Connection(struct ev_loop *loop, int fd, SSL *ssl,
     : tls{DefaultMemchunks(mcpool), DefaultPeekMemchunks(mcpool)},
       wlimit(loop, &wev, write_limit.rate, write_limit.burst),
       rlimit(loop, &rev, read_limit.rate, read_limit.burst, this),
-      writecb(writecb),
-      readcb(readcb),
-      timeoutcb(timeoutcb),
       loop(loop),
       data(data),
       fd(fd),
diff --git a/src/shrpx_connection.h b/src/shrpx_connection.h
index a361e15e..8ce5aa24 100644
--- a/src/shrpx_connection.h
+++ b/src/shrpx_connection.h
@@ -125,9 +125,6 @@ struct Connection {
   ev_timer rt;
   RateLimit wlimit;
   RateLimit rlimit;
-  IOCb writecb;
-  IOCb readcb;
-  TimerCb timeoutcb;
   struct ev_loop *loop;
   void *data;
   int fd;