diff --git a/bsp/nuvoton/libraries/m2354/rtt_port/SConscript b/bsp/nuvoton/libraries/m2354/rtt_port/SConscript
index 549b75901b0cf4f0c6163346b5145be7058d8dbb..0822565fbb209dbf25f1fcbf8c4f781766156e74 100644
--- a/bsp/nuvoton/libraries/m2354/rtt_port/SConscript
+++ b/bsp/nuvoton/libraries/m2354/rtt_port/SConscript
@@ -10,12 +10,12 @@ group = []
 
 # USB driver constrain
 if GetDepend('BOARD_USING_USBD') and ( GetDepend('BSP_USING_OTG') or GetDepend('BSP_USING_USBH') ):
-    print 'Sorry, wrong selection.'
-    print '[Hint] You already select BOARD_USING_USBD. Please de-select BSP_USING_OTG and BSP_USING_USBH.'
+    print ('Sorry, wrong selection.')
+    print ('[Hint] You already select BOARD_USING_USBD. Please de-select BSP_USING_OTG and BSP_USING_USBH.')
     sys.exit(1)
 elif GetDepend('BOARD_USING_USBH') and ( GetDepend('BSP_USING_OTG') or GetDepend('BSP_USING_USBD') ):
-    print 'Sorry, wrong selection.'
-    print '[Hint] You already select BOARD_USING_USBH. Please de-select BSP_USING_OTG and BSP_USING_USBD options.'
+    print ('Sorry, wrong selection.')
+    print ('[Hint] You already select BOARD_USING_USBH. Please de-select BSP_USING_OTG and BSP_USING_USBD options.')
     sys.exit(1)
 else:
     group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/SConscript b/bsp/nuvoton/libraries/m480/rtt_port/SConscript
index 77bd29071444d4666f2f6ef0e9d2741182d800f4..2e80314127654305ff58e34468f6db03b1ec91ee 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/SConscript
+++ b/bsp/nuvoton/libraries/m480/rtt_port/SConscript
@@ -10,24 +10,24 @@ group = []
 
 # USB driver constrain
 if GetDepend('BOARD_USING_HSUSBD') and ( GetDepend('BSP_USING_USBD') or GetDepend('BSP_USING_HSUSBH') or GetDepend('BSP_USING_HSOTG') ):
-    print 'Sorry, wrong selection.'
-    print '[Hint] You already select BOARD_USING_HSUSBD. Please de-select BSP_USING_USBD, BSP_USING_HSUSBH and BSP_USING_HSOTG options.'
+    print ('Sorry, wrong selection.')
+    print ('[Hint] You already select BOARD_USING_HSUSBD. Please de-select BSP_USING_USBD, BSP_USING_HSUSBH and BSP_USING_HSOTG options.')
     sys.exit(1)
 elif GetDepend('BOARD_USING_HSUSBD_USBH') and ( GetDepend('BSP_USING_USBD') or GetDepend('BSP_USING_HSUSBH') or GetDepend('BSP_USING_HSOTG') ):
-    print 'Sorry, wrong selection.'
-    print '[Hint] You already select BOARD_USING_HSUSBD_USBH. Please de-select BSP_USING_USBD, BSP_USING_HSUSBH and BSP_USING_HSOTG options.'
+    print ('Sorry, wrong selection.')
+    print ('[Hint] You already select BOARD_USING_HSUSBD_USBH. Please de-select BSP_USING_USBD, BSP_USING_HSUSBH and BSP_USING_HSOTG options.')
     sys.exit(1)
 elif GetDepend('BOARD_USING_HSUSBH') and ( GetDepend('BSP_USING_USBH') or GetDepend('BSP_USING_HSUSBD') or GetDepend('BSP_USING_HSOTG') ):
-    print 'Sorry, wrong selection.'
-    print '[Hint] You already select BOARD_USING_HSUSBH. Please de-select BSP_USING_USBH, BSP_USING_HSUSBD and BSP_USING_HSOTG options.'
+    print ('Sorry, wrong selection.')
+    print ('[Hint] You already select BOARD_USING_HSUSBH. Please de-select BSP_USING_USBH, BSP_USING_HSUSBD and BSP_USING_HSOTG options.')
     sys.exit(1)
 elif GetDepend('BOARD_USING_HSUSBH_USBD') and ( GetDepend('BSP_USING_USBH') or GetDepend('BSP_USING_HSUSBD') or GetDepend('BSP_USING_HSOTG') ):
-    print 'Sorry, wrong selection.'
-    print '[Hint] You already select BOARD_USING_HSUSBH_USBD. Please de-select BSP_USING_USBH, BSP_USING_HSUSBD and BSP_USING_HSOTG options.'
+    print ('Sorry, wrong selection.')
+    print ('[Hint] You already select BOARD_USING_HSUSBH_USBD. Please de-select BSP_USING_USBH, BSP_USING_HSUSBD and BSP_USING_HSOTG options.')
     sys.exit(1)
 elif GetDepend('BOARD_USING_HSOTG') and ( GetDepend('BSP_USING_USBD') or GetDepend('BSP_USING_USBH') ):
-    print 'Sorry, wrong selection.'
-    print '[Hint] You already select BOARD_USING_HSOTG. Please de-select BSP_USING_USBD and BSP_USING_USBH options.'
+    print ('Sorry, wrong selection.')
+    print ('[Hint] You already select BOARD_USING_HSOTG. Please de-select BSP_USING_USBD and BSP_USING_USBH options.')
     sys.exit(1)
 else:
     group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)