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-rw-r--r--boards/ST_STM32F4_DISCOVERY/board.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/boards/ST_STM32F4_DISCOVERY/board.h b/boards/ST_STM32F4_DISCOVERY/board.h
index 56511b6d7..07e84348e 100644
--- a/boards/ST_STM32F4_DISCOVERY/board.h
+++ b/boards/ST_STM32F4_DISCOVERY/board.h
@@ -259,7 +259,7 @@
PIN_PUDR_PULLUP(14) | \
PIN_PUDR_PULLUP(15))
#define VAL_GPIOC_ODR 0xFFFFFFFF
-#define VAL_GPIOC_AFRL PIN_AFIO_AF(GPIOC_MCLK, 6))
+#define VAL_GPIOC_AFRL (PIN_AFIO_AF(GPIOC_MCLK, 6))
#define VAL_GPIOC_AFRH (PIN_AFIO_AF(GPIOC_SCLK, 6) | \
PIN_AFIO_AF(GPIOC_SDIN, 6))