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-rw-r--r--os/io/platforms/AT91SAM7X/serial_lld.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/os/io/platforms/AT91SAM7X/serial_lld.h b/os/io/platforms/AT91SAM7X/serial_lld.h
index 6156c3933..f6f704e95 100644
--- a/os/io/platforms/AT91SAM7X/serial_lld.h
+++ b/os/io/platforms/AT91SAM7X/serial_lld.h
@@ -138,10 +138,10 @@ typedef struct {
/*===========================================================================*/
/** @cond never*/
-#if defined(USE_SAM7X_USART0)
+#if USE_SAM7X_USART0
extern SerialDriver COM1;
#endif
-#if defined(USE_SAM7X_USART1)
+#if USE_SAM7X_USART1
extern SerialDriver COM2;
#endif