diff --git a/src/portable/renesas/rusb2/dcd_rusb2.c b/src/portable/renesas/rusb2/dcd_rusb2.c
index 2653d0da6..e9ac46517 100644
--- a/src/portable/renesas/rusb2/dcd_rusb2.c
+++ b/src/portable/renesas/rusb2/dcd_rusb2.c
@@ -67,6 +67,8 @@
 /* LINK core registers */
 #if defined(__CCRX__)
   #define RUSB2 ((RUSB2_REG_t __evenaccess*) RUSB2_REG_BASE)
+#elif defined(__RX__)
+  #define RUSB2 ((RUSB2_REG_t*) RUSB2_REG_BASE)
 #elif (CFG_TUSB_RHPORT1_MODE & OPT_MODE_DEVICE)
   #define RUSB2 ((R_USB_HS0_Type*)R_USB_HS0_BASE)
 #else
diff --git a/src/portable/renesas/rusb2/hcd_rusb2.c b/src/portable/renesas/rusb2/hcd_rusb2.c
index 1e26c931d..b97ffd7e9 100644
--- a/src/portable/renesas/rusb2/hcd_rusb2.c
+++ b/src/portable/renesas/rusb2/hcd_rusb2.c
@@ -54,6 +54,8 @@
 /* LINK core registers */
 #if defined(__CCRX__)
   #define RUSB2 ((RUSB2_REG_t __evenaccess*) RUSB2_REG_BASE)
+#elif defined(__RX__)
+  #define RUSB2 ((RUSB2_REG_t*) RUSB2_REG_BASE)
 #elif (CFG_TUSB_RHPORT1_MODE & OPT_MODE_HOST)
   #define RUSB2 ((R_USB_HS0_Type*) R_USB_HS0_BASE)
 #else