diff --git a/tests/test/support/ehci_controller.c b/tests/test/support/ehci_controller.c
index 317aba8b..d1a7bbdd 100644
--- a/tests/test/support/ehci_controller.c
+++ b/tests/test/support/ehci_controller.c
@@ -50,10 +50,10 @@
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF
 //--------------------------------------------------------------------+
-ehci_data_t ehci_data;
 LPC_USB0_Type lpc_usb0;
 LPC_USB1_Type lpc_usb1;
 
+extern ehci_data_t ehci_data;
 extern usbh_device_info_t usbh_devices[TUSB_CFG_HOST_DEVICE_MAX+1];
 
 //--------------------------------------------------------------------+