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-rw-r--r--demos/STM32/CMSIS-STM32F407-DISCOVERY/halconf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/demos/STM32/CMSIS-STM32F407-DISCOVERY/halconf.h b/demos/STM32/CMSIS-STM32F407-DISCOVERY/halconf.h
index af94b0518..dddc44db8 100644
--- a/demos/STM32/CMSIS-STM32F407-DISCOVERY/halconf.h
+++ b/demos/STM32/CMSIS-STM32F407-DISCOVERY/halconf.h
@@ -322,6 +322,7 @@
*/
#if !defined(SERIAL_USB_BUFFERS_NUMBER) || defined(__DOXYGEN__)
#define SERIAL_USB_BUFFERS_NUMBER 2
+#endif
/*===========================================================================*/
/* SPI driver related settings. */