diff --git a/boards/base/STM32F746-Discovery/stm32f746g_discovery_sdram.c b/boards/base/STM32F746-Discovery/stm32f746g_discovery_sdram.c
index 9d77ee36..17dc82cb 100644
--- a/boards/base/STM32F746-Discovery/stm32f746g_discovery_sdram.c
+++ b/boards/base/STM32F746-Discovery/stm32f746g_discovery_sdram.c
@@ -1,4 +1,7 @@
 #include "../../../gfx.h"
+#undef Red
+#undef Green
+#undef Blue
 #include "stm32f746g_discovery_sdram.h"
 #include "stm32f7xx_hal_rcc.h"
 #include "stm32f7xx_hal_dma.h"
diff --git a/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c b/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c
index 1ea7450a..deeaccb0 100644
--- a/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c
+++ b/boards/base/STM32F746-Discovery/stm32f746g_raw32_system.c
@@ -1,4 +1,7 @@
 #include "../../../gfx.h"
+#undef Red
+#undef Green
+#undef Blue
 #include "stm32f7xx.h"
 
 #if !defined  (HSE_VALUE)
diff --git a/boards/base/STM32F746-Discovery/stm32f746g_raw32_ugfx.c b/boards/base/STM32F746-Discovery/stm32f746g_raw32_ugfx.c
index 2f6af0dd..51e59936 100644
--- a/boards/base/STM32F746-Discovery/stm32f746g_raw32_ugfx.c
+++ b/boards/base/STM32F746-Discovery/stm32f746g_raw32_ugfx.c
@@ -1,4 +1,7 @@
 #include "../../../gfx.h"
+#undef Red
+#undef Green
+#undef Blue
 #include "stm32f7xx_hal.h"
 
 #if GFX_USE_OS_CHIBIOS
diff --git a/boards/base/STM32F746-Discovery/stm32f7_i2c.c b/boards/base/STM32F746-Discovery/stm32f7_i2c.c
index d1e2ed28..07a6ce30 100644
--- a/boards/base/STM32F746-Discovery/stm32f7_i2c.c
+++ b/boards/base/STM32F746-Discovery/stm32f7_i2c.c
@@ -1,4 +1,7 @@
 #include "gfx.h"
+#undef Red
+#undef Green
+#undef Blue
 #include "stm32f7_i2c.h"
 
 /*