diff --git a/porting/examples/linux/main.c b/porting/examples/linux/main.c
index 25323b9a0f..e81e60872b 100644
--- a/porting/examples/linux/main.c
+++ b/porting/examples/linux/main.c
@@ -37,7 +37,6 @@ static struct ble_npl_task s_task_hci;
 
 void nimble_host_task(void *param);
 void ble_hci_sock_ack_handler(void *param);
-void ble_hci_sock_init(void);
 void ble_hci_sock_set_device(int dev);
 void ble_store_ram_init(void);
 
@@ -67,7 +66,6 @@ int main(int argc, char *argv[])
     }
 
     nimble_port_init();
-    ble_hci_sock_init();
 
     /* This example provides GATT Alert service */
     ble_svc_gap_init();
diff --git a/porting/examples/linux_blemesh/main.c b/porting/examples/linux_blemesh/main.c
index 5a9befdc10..678062f207 100644
--- a/porting/examples/linux_blemesh/main.c
+++ b/porting/examples/linux_blemesh/main.c
@@ -80,7 +80,6 @@ int main(int argc, char *argv[])
     }
 
     nimble_port_init();
-    ble_hci_sock_init();
 
     ble_svc_gap_init();
     ble_svc_gatt_init();
diff --git a/porting/examples/nuttx/main.c b/porting/examples/nuttx/main.c
index 7e289be77d..bd731105df 100644
--- a/porting/examples/nuttx/main.c
+++ b/porting/examples/nuttx/main.c
@@ -43,7 +43,6 @@ static struct ble_npl_task s_task_hci;
 
 void nimble_host_task(void *param);
 void ble_hci_sock_ack_handler(void *param);
-void ble_hci_sock_init(void);
 void ble_hci_sock_set_device(int dev);
 void ble_store_ram_init(void);
 
@@ -89,9 +88,6 @@ int main(int argc, char *argv[])
     printf("port init\n");
     nimble_port_init();
 
-    printf("hci init\n");
-    ble_hci_sock_init();
-
     /* This example provides GATT Alert service */
     printf("gap init\n");
     ble_svc_gap_init();