diff --git a/STM32F1/cores/maple/libmaple/usb/stm32f1/usb_cdcacm.c b/STM32F1/cores/maple/libmaple/usb/stm32f1/usb_cdcacm.c
index aefa45c..448c05d 100644
--- a/STM32F1/cores/maple/libmaple/usb/stm32f1/usb_cdcacm.c
+++ b/STM32F1/cores/maple/libmaple/usb/stm32f1/usb_cdcacm.c
@@ -449,7 +449,7 @@ uint32 usb_cdcacm_rx(uint8* buf, uint32 len) {
 
     /* If all bytes have been read, re-enable the RX endpoint, which
      * was set to NAK when the current batch of bytes was received. */
-    if (n_unread_bytes ==0) {
+    if (n_unread_bytes == 0) {
         usb_set_ep_rx_count(USB_CDCACM_RX_ENDP, USB_CDCACM_RX_EPSIZE);
         usb_set_ep_rx_stat(USB_CDCACM_RX_ENDP, USB_EP_STAT_RX_VALID);
     }
@@ -565,7 +565,7 @@ static void vcomDataRxCb(void) {
 
 	n_unread_bytes += ep_rx_size;
 
-    if ( n_unread_bytes==0 ) {
+    if ( n_unread_bytes == 0 ) {
         usb_set_ep_rx_count(USB_CDCACM_RX_ENDP, USB_CDCACM_RX_EPSIZE);
         usb_set_ep_rx_stat(USB_CDCACM_RX_ENDP, USB_EP_STAT_RX_VALID);
     }