diff --git a/arch/renesas/src/rx65n/rx65n_dtc.c b/arch/renesas/src/rx65n/rx65n_dtc.c
index 3565b8ee3df..a2cb9a751cf 100644
--- a/arch/renesas/src/rx65n/rx65n_dtc.c
+++ b/arch/renesas/src/rx65n/rx65n_dtc.c
@@ -1352,7 +1352,7 @@ dtc_err_t rx65n_dtc_setup_seq_dynamic_transferdata(DTC_HANDLE handle,
 
           p_dtransfer_cfg++;
           p_transfer_data++;
-          count --;
+          count--;
         }
     }
 
@@ -1555,7 +1555,7 @@ dtc_err_t rx65n_dtc_setup_dynamic_transferdata(DTC_HANDLE handle,
 
       p_dtransfer_cfg++;
       p_transfer_data++;
-      count --;
+      count--;
     }
 
   /* Restore RRS bit */
diff --git a/arch/renesas/src/rx65n/rx65n_usbdev.c b/arch/renesas/src/rx65n/rx65n_usbdev.c
index 66bfff90136..86ef501e22b 100644
--- a/arch/renesas/src/rx65n/rx65n_usbdev.c
+++ b/arch/renesas/src/rx65n/rx65n_usbdev.c
@@ -5838,7 +5838,7 @@ static int rx65n_usbinterrupt(int irq, FAR void *context, FAR void *arg)
       if (USB_ATTACH == usb_pstd_chk_vbsts())
         {
           priv->attached = 1;
-          connected_times ++;
+          connected_times++;
           syslog (LOG_INFO, "NuttX: USB Device Connected. %d\n",
                   connected_times);
           uinfo("Device attached\n");