diff --git a/demos/bsp/boards/board.h b/demos/bsp/boards/board.h
index 371dc6b34..c8651bdc6 100644
--- a/demos/bsp/boards/board.h
+++ b/demos/bsp/boards/board.h
@@ -86,7 +86,7 @@
 #if BOARD == 0
   #error BOARD is not defined or supported yet
 #elif BOARD == BOARD_NGX4330
-  #include "ngx/board_ngx4330.h"`
+  #include "ngx/board_ngx4330.h"
 #elif BOARD == BOARD_LPCXPRESSO1347
   #include "lpcxpresso/board_lpcxpresso1347.h"
 #elif BOARD == BOARD_RF1GHZNODE
diff --git a/demos/host/src/cdc_serial_app.c b/demos/host/src/cdc_serial_app.c
index 6738a1b85..cb07b0501 100644
--- a/demos/host/src/cdc_serial_app.c
+++ b/demos/host/src/cdc_serial_app.c
@@ -58,7 +58,7 @@ static uint8_t buffer_in[64] TUSB_CFG_ATTR_USBRAM;
 //--------------------------------------------------------------------+
 // INTERNAL OBJECT & FUNCTION DECLARATION
 //--------------------------------------------------------------------+
-void tusbh_cdc_mounted_isr(uint8_t dev_addr)
+void tusbh_cdc_mounted_cb(uint8_t dev_addr)
 {
   // application set-up
   osal_queue_flush(queue_hdl);
diff --git a/demos/host/src/keyboard_app.c b/demos/host/src/keyboard_app.c
index ddd73fb97..c80ad6bc2 100644
--- a/demos/host/src/keyboard_app.c
+++ b/demos/host/src/keyboard_app.c
@@ -67,7 +67,7 @@ static inline void process_kbd_report(tusb_keyboard_report_t const * report);
 //--------------------------------------------------------------------+
 // tinyusb callback (ISR context)
 //--------------------------------------------------------------------+
-void tusbh_hid_keyboard_mounted_isr(uint8_t dev_addr)
+void tusbh_hid_keyboard_mounted_cb(uint8_t dev_addr)
 {
   // application set-up
   osal_queue_flush(queue_kbd_hdl);
diff --git a/demos/host/src/mouse_app.c b/demos/host/src/mouse_app.c
index 23a11f701..b7eba887f 100644
--- a/demos/host/src/mouse_app.c
+++ b/demos/host/src/mouse_app.c
@@ -67,7 +67,7 @@ static inline void process_mouse_report(tusb_mouse_report_t const * p_report);
 //--------------------------------------------------------------------+
 // tinyusb callback (ISR context)
 //--------------------------------------------------------------------+
-void tusbh_hid_mouse_mounted_isr(uint8_t dev_addr)
+void tusbh_hid_mouse_mounted_cb(uint8_t dev_addr)
 {
   // application set-up
   osal_queue_flush(queue_mouse_hdl);
diff --git a/tests/lpc18xx_43xx/test/host/cdc/cdc_callback.h b/tests/lpc18xx_43xx/test/host/cdc/cdc_callback.h
index 0919627a1..c5004ee88 100644
--- a/tests/lpc18xx_43xx/test/host/cdc/cdc_callback.h
+++ b/tests/lpc18xx_43xx/test/host/cdc/cdc_callback.h
@@ -53,7 +53,7 @@
  extern "C" {
 #endif
 
-void tusbh_cdc_mounted_isr(uint8_t dev_addr);
+void tusbh_cdc_mounted_cb(uint8_t dev_addr);
 void tusbh_cdc_unmounted_isr(uint8_t dev_addr);
 void tusbh_cdc_isr(uint8_t dev_addr, tusb_event_t event);
 void tusbh_cdc_xfer_isr(uint8_t dev_addr, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes);
diff --git a/tests/lpc18xx_43xx/test/host/cdc/test_cdc_host.c b/tests/lpc18xx_43xx/test/host/cdc/test_cdc_host.c
index 92534e9f9..e803137d4 100644
--- a/tests/lpc18xx_43xx/test/host/cdc/test_cdc_host.c
+++ b/tests/lpc18xx_43xx/test/host/cdc/test_cdc_host.c
@@ -128,7 +128,7 @@ void test_cdch_open_length_check(void)
 
   pipe_handle_t dummy_hld = { .dev_addr = 1 };
   hcd_pipe_open_IgnoreAndReturn(dummy_hld);
-  tusbh_cdc_mounted_isr_Expect(dev_addr);
+  tusbh_cdc_mounted_cb_Expect(dev_addr);
 
   //------------- CUT -------------//
   TEST_ASSERT_EQUAL( TUSB_ERROR_NONE, cdch_open_subtask(dev_addr, p_comm_interface, &length) );
@@ -140,7 +140,7 @@ void test_cdch_open_interface_number_check(void)
 {
   pipe_handle_t dummy_hld = { .dev_addr = 1 };
   hcd_pipe_open_IgnoreAndReturn(dummy_hld);
-  tusbh_cdc_mounted_isr_Expect(dev_addr);
+  tusbh_cdc_mounted_cb_Expect(dev_addr);
 
   //------------- CUT -------------//
   TEST_ASSERT_EQUAL( TUSB_ERROR_NONE, cdch_open_subtask(dev_addr, p_comm_interface, &length) );
@@ -153,7 +153,7 @@ void test_cdch_open_acm_capacity_check(void)
 {
   pipe_handle_t dummy_hld = { .dev_addr = 1 };
   hcd_pipe_open_IgnoreAndReturn(dummy_hld);
-  tusbh_cdc_mounted_isr_Expect(dev_addr);
+  tusbh_cdc_mounted_cb_Expect(dev_addr);
 
   //------------- CUT -------------//
   TEST_ASSERT_EQUAL( TUSB_ERROR_NONE, cdch_open_subtask(dev_addr, p_comm_interface, &length) );
@@ -173,7 +173,7 @@ void test_cdch_close_device(void)
   hcd_pipe_open_ExpectAndReturn(dev_addr, p_endpoint_notification, TUSB_CLASS_CDC, pipe_notification);
   hcd_pipe_open_ExpectAndReturn(dev_addr, p_endpoint_out, TUSB_CLASS_CDC, pipe_out);
   hcd_pipe_open_ExpectAndReturn(dev_addr, p_endpoint_in, TUSB_CLASS_CDC, pipe_int);
-  tusbh_cdc_mounted_isr_Expect(dev_addr);
+  tusbh_cdc_mounted_cb_Expect(dev_addr);
 
   TEST_ASSERT_EQUAL( TUSB_ERROR_NONE, cdch_open_subtask(dev_addr, p_comm_interface, &length) );
 
diff --git a/tests/lpc18xx_43xx/test/host/hid/hidh_callback.h b/tests/lpc18xx_43xx/test/host/hid/hidh_callback.h
index 9ac72bb8d..44b8c0ff7 100644
--- a/tests/lpc18xx_43xx/test/host/hid/hidh_callback.h
+++ b/tests/lpc18xx_43xx/test/host/hid/hidh_callback.h
@@ -60,11 +60,11 @@
 
 //------------- hidh -------------//
 void tusbh_hid_keyboard_isr(uint8_t dev_addr, tusb_event_t event) ATTR_WEAK;
-void tusbh_hid_keyboard_mounted_isr(uint8_t dev_addr) ATTR_WEAK;
+void tusbh_hid_keyboard_mounted_cb(uint8_t dev_addr) ATTR_WEAK;
 void tusbh_hid_keyboard_unmounted_isr(uint8_t dev_addr) ATTR_WEAK;
 
 void tusbh_hid_mouse_isr(uint8_t dev_addr, tusb_event_t event) ATTR_WEAK;
-void tusbh_hid_mouse_mounted_isr(uint8_t dev_addr) ATTR_WEAK;
+void tusbh_hid_mouse_mounted_cb(uint8_t dev_addr) ATTR_WEAK;
 void tusbh_hid_mouse_unmounted_isr(uint8_t dev_addr) ATTR_WEAK;
 
 #ifdef __cplusplus
diff --git a/tests/lpc18xx_43xx/test/host/hid/test_hidh_keyboard.c b/tests/lpc18xx_43xx/test/host/hid/test_hidh_keyboard.c
index 4d80671f6..c46bd8844 100644
--- a/tests/lpc18xx_43xx/test/host/hid/test_hidh_keyboard.c
+++ b/tests/lpc18xx_43xx/test/host/hid/test_hidh_keyboard.c
@@ -145,7 +145,7 @@ void test_keyboard_open_ok(void)
 
   usbh_control_xfer_subtask_StubWithCallback(stub_set_idle_request);
   hcd_pipe_open_ExpectAndReturn(dev_addr, p_kdb_endpoint_desc, TUSB_CLASS_HID, pipe_hdl);
-  tusbh_hid_keyboard_mounted_isr_Expect(dev_addr);
+  tusbh_hid_keyboard_mounted_cb_Expect(dev_addr);
 
   //------------- Code Under TEST -------------//
   TEST_ASSERT_EQUAL(TUSB_ERROR_NONE, hidh_open_subtask(dev_addr, p_kbd_interface_desc, &length));
diff --git a/tests/lpc18xx_43xx/test/host/hid/test_hidh_mouse.c b/tests/lpc18xx_43xx/test/host/hid/test_hidh_mouse.c
index d64d70460..2e9a291f4 100644
--- a/tests/lpc18xx_43xx/test/host/hid/test_hidh_mouse.c
+++ b/tests/lpc18xx_43xx/test/host/hid/test_hidh_mouse.c
@@ -134,7 +134,7 @@ void test_mouse_open_ok(void)
 
   usbh_control_xfer_subtask_StubWithCallback(stub_set_idle_request);
   hcd_pipe_open_ExpectAndReturn(dev_addr, p_mouse_endpoint_desc, TUSB_CLASS_HID, pipe_hdl);
-  tusbh_hid_mouse_mounted_isr_Expect(dev_addr);
+  tusbh_hid_mouse_mounted_cb_Expect(dev_addr);
 
   //------------- Code Under TEST -------------//
   TEST_ASSERT_STATUS( hidh_open_subtask(dev_addr, p_mouse_interface_desc, &length));
diff --git a/tinyusb/class/cdc_host.c b/tinyusb/class/cdc_host.c
index e349f3b9f..3831fc243 100644
--- a/tinyusb/class/cdc_host.c
+++ b/tinyusb/class/cdc_host.c
@@ -194,9 +194,9 @@ tusb_error_t cdch_open_subtask(uint8_t dev_addr, tusb_descriptor_interface_t con
   }
 
   // FIXME mounted class flag is not set yet
-  if (tusbh_cdc_mounted_isr)
+  if (tusbh_cdc_mounted_cb)
   {
-    tusbh_cdc_mounted_isr(dev_addr);
+    tusbh_cdc_mounted_cb(dev_addr);
   }
 
   return TUSB_ERROR_NONE;
diff --git a/tinyusb/class/cdc_host.h b/tinyusb/class/cdc_host.h
index fc21fcc25..ac8cf7acb 100644
--- a/tinyusb/class/cdc_host.h
+++ b/tinyusb/class/cdc_host.h
@@ -69,7 +69,7 @@ tusb_error_t tusbh_cdc_send(uint8_t dev_addr, void const * p_data, uint32_t leng
 tusb_error_t tusbh_cdc_receive(uint8_t dev_addr, void * p_buffer, uint32_t length, bool is_notify);
 
 //------------- Application Callback -------------//
-void tusbh_cdc_mounted_isr(uint8_t dev_addr) ATTR_WEAK;
+void tusbh_cdc_mounted_cb(uint8_t dev_addr) ATTR_WEAK;
 void tusbh_cdc_unmounted_isr(uint8_t dev_addr) ATTR_WEAK;
 void tusbh_cdc_isr(uint8_t dev_addr, tusb_event_t event) ATTR_WEAK;
 void tusbh_cdc_xfer_isr(uint8_t dev_addr, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes) ATTR_WEAK;
diff --git a/tinyusb/class/hid_host.c b/tinyusb/class/hid_host.c
index 4b5a31f0c..be1e7f28d 100644
--- a/tinyusb/class/hid_host.c
+++ b/tinyusb/class/hid_host.c
@@ -257,9 +257,9 @@ tusb_error_t hidh_open_subtask(uint8_t dev_addr, tusb_descriptor_interface_t con
     if ( HID_PROTOCOL_KEYBOARD == p_interface_desc->bInterfaceProtocol)
     {
       SUBTASK_ASSERT_STATUS ( hidh_interface_open(dev_addr, p_interface_desc->bInterfaceNumber, p_endpoint_desc, &keyboard_data[dev_addr-1]) );
-      if ( tusbh_hid_keyboard_mounted_isr )
+      if ( tusbh_hid_keyboard_mounted_cb )
       {
-        tusbh_hid_keyboard_mounted_isr(dev_addr);
+        tusbh_hid_keyboard_mounted_cb(dev_addr);
       }
     } else
     #endif
@@ -268,9 +268,9 @@ tusb_error_t hidh_open_subtask(uint8_t dev_addr, tusb_descriptor_interface_t con
     if ( HID_PROTOCOL_MOUSE == p_interface_desc->bInterfaceProtocol)
     {
       SUBTASK_ASSERT_STATUS ( hidh_interface_open(dev_addr, p_interface_desc->bInterfaceNumber, p_endpoint_desc, &mouse_data[dev_addr-1]) );
-      if (tusbh_hid_mouse_mounted_isr)
+      if (tusbh_hid_mouse_mounted_cb)
       {
-        tusbh_hid_mouse_mounted_isr(dev_addr);
+        tusbh_hid_mouse_mounted_cb(dev_addr);
       }
     } else
     #endif
diff --git a/tinyusb/class/hid_host.h b/tinyusb/class/hid_host.h
index 7d5876990..a61a66e70 100644
--- a/tinyusb/class/hid_host.h
+++ b/tinyusb/class/hid_host.h
@@ -64,7 +64,7 @@ tusb_error_t  tusbh_hid_keyboard_get_report(uint8_t dev_addr, void * report) ATT
 tusb_interface_status_t tusbh_hid_keyboard_status(uint8_t dev_addr) ATTR_WARN_UNUSED_RESULT;
 //------------- Application Callback -------------//
 void tusbh_hid_keyboard_isr(uint8_t dev_addr, tusb_event_t event) ATTR_WEAK;
-void tusbh_hid_keyboard_mounted_isr(uint8_t dev_addr) ATTR_WEAK;
+void tusbh_hid_keyboard_mounted_cb(uint8_t dev_addr) ATTR_WEAK;
 void tusbh_hid_keyboard_unmounted_isr(uint8_t dev_addr) ATTR_WEAK;
 
 //--------------------------------------------------------------------+
@@ -75,7 +75,7 @@ tusb_error_t  tusbh_hid_mouse_get_report(uint8_t dev_addr, void* report) ATTR_WA
 tusb_interface_status_t tusbh_hid_mouse_status(uint8_t dev_addr) ATTR_WARN_UNUSED_RESULT;
 //------------- Application Callback -------------//
 void tusbh_hid_mouse_isr(uint8_t dev_addr, tusb_event_t event) ATTR_WEAK;
-void tusbh_hid_mouse_mounted_isr(uint8_t dev_addr) ATTR_WEAK;
+void tusbh_hid_mouse_mounted_cb(uint8_t dev_addr) ATTR_WEAK;
 void tusbh_hid_mouse_unmounted_isr(uint8_t dev_addr) ATTR_WEAK;
 
 //--------------------------------------------------------------------+