diff --git a/src/sp/transport/inproc/inproc.c b/src/sp/transport/inproc/inproc.c
index 978b66797..b7ead07ce 100644
--- a/src/sp/transport/inproc/inproc.c
+++ b/src/sp/transport/inproc/inproc.c
@@ -686,14 +686,6 @@ struct nni_sp_tran nni_inproc_tran = {
 	.tran_fini     = inproc_fini,
 };
 
-#ifndef NNG_ELIDE_DEPRECATED
-int
-nng_inproc_register(void)
-{
-	return (nni_init());
-}
-#endif
-
 void
 nni_sp_inproc_register(void)
 {
diff --git a/src/sp/transport/ipc/ipc.c b/src/sp/transport/ipc/ipc.c
index 07bb55484..82af69252 100644
--- a/src/sp/transport/ipc/ipc.c
+++ b/src/sp/transport/ipc/ipc.c
@@ -1154,14 +1154,6 @@ static nni_sp_tran ipc_tran_abstract = {
 };
 #endif
 
-#ifndef NNG_ELIDE_DEPRECATED
-int
-nng_ipc_register(void)
-{
-	return (nni_init());
-}
-#endif
-
 void
 nni_sp_ipc_register(void)
 {
diff --git a/src/sp/transport/tcp/tcp.c b/src/sp/transport/tcp/tcp.c
index be2e03458..437001f6d 100644
--- a/src/sp/transport/tcp/tcp.c
+++ b/src/sp/transport/tcp/tcp.c
@@ -1272,14 +1272,6 @@ static nni_sp_tran tcp6_tran = {
 };
 #endif
 
-#ifndef NNG_ELIDE_DEPRECATED
-int
-nng_tcp_register(void)
-{
-	return (nni_init());
-}
-#endif
-
 void
 nni_sp_tcp_register(void)
 {
diff --git a/src/sp/transport/ws/websocket.c b/src/sp/transport/ws/websocket.c
index 0e377e4b8..c749e7897 100644
--- a/src/sp/transport/ws/websocket.c
+++ b/src/sp/transport/ws/websocket.c
@@ -670,20 +670,6 @@ static nni_sp_tran ws6_tran = {
 	.tran_fini     = wstran_fini,
 };
 
-#ifndef NNG_ELIDE_DEPRECATED
-int
-nng_ws_register(void)
-{
-	return (nni_init());
-}
-
-int
-nng_wss_register(void)
-{
-	return (nni_init());
-}
-#endif
-
 void
 nni_sp_ws_register(void)
 {