diff --git a/mongoose.c b/mongoose.c
index 667ab917..29d29484 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -5323,12 +5323,6 @@ void mg_tcpip_free(struct mg_tcpip_if *ifp) {
   free((char *) ifp->tx.ptr);
 }
 
-int mg_mkpipe(struct mg_mgr *m, mg_event_handler_t fn, void *d, bool udp) {
-  (void) m, (void) fn, (void) d, (void) udp;
-  MG_ERROR(("Not implemented"));
-  return -1;
-}
-
 static void send_syn(struct mg_connection *c) {
   struct connstate *s = (struct connstate *) (c + 1);
   uint32_t isn = mg_htonl((uint32_t) mg_ntohs(c->loc.port));
diff --git a/mongoose.h b/mongoose.h
index f7852f03..c68db2e7 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -1261,7 +1261,6 @@ bool mg_send(struct mg_connection *, const void *, size_t);
 size_t mg_printf(struct mg_connection *, const char *fmt, ...);
 size_t mg_vprintf(struct mg_connection *, const char *fmt, va_list *ap);
 bool mg_aton(struct mg_str str, struct mg_addr *addr);
-int mg_mkpipe(struct mg_mgr *, mg_event_handler_t, void *, bool udp);
 
 // These functions are used to integrate with custom network stacks
 struct mg_connection *mg_alloc_conn(struct mg_mgr *);
diff --git a/src/net.h b/src/net.h
index c9442953..03b916d7 100644
--- a/src/net.h
+++ b/src/net.h
@@ -90,7 +90,6 @@ bool mg_send(struct mg_connection *, const void *, size_t);
 size_t mg_printf(struct mg_connection *, const char *fmt, ...);
 size_t mg_vprintf(struct mg_connection *, const char *fmt, va_list *ap);
 bool mg_aton(struct mg_str str, struct mg_addr *addr);
-int mg_mkpipe(struct mg_mgr *, mg_event_handler_t, void *, bool udp);
 
 // These functions are used to integrate with custom network stacks
 struct mg_connection *mg_alloc_conn(struct mg_mgr *);
diff --git a/src/net_builtin.c b/src/net_builtin.c
index e232898d..c6740f9f 100644
--- a/src/net_builtin.c
+++ b/src/net_builtin.c
@@ -981,12 +981,6 @@ void mg_tcpip_free(struct mg_tcpip_if *ifp) {
   free((char *) ifp->tx.ptr);
 }
 
-int mg_mkpipe(struct mg_mgr *m, mg_event_handler_t fn, void *d, bool udp) {
-  (void) m, (void) fn, (void) d, (void) udp;
-  MG_ERROR(("Not implemented"));
-  return -1;
-}
-
 static void send_syn(struct mg_connection *c) {
   struct connstate *s = (struct connstate *) (c + 1);
   uint32_t isn = mg_htonl((uint32_t) mg_ntohs(c->loc.port));