diff --git a/include/libopencm3/stm32/common/dma2d_common_f47.h b/include/libopencm3/stm32/common/dma2d_common_f47.h
index d8ba0375..d66e37e3 100644
--- a/include/libopencm3/stm32/common/dma2d_common_f47.h
+++ b/include/libopencm3/stm32/common/dma2d_common_f47.h
@@ -145,7 +145,8 @@
 #define DMA2D_OPFCCR_CM_ARGB8888	0
 #define DMA2D_OPFCCR_CM_RGB888		1
 #define DMA2D_OPFCCR_CM_RGB565		2
-#define DMA2D_OPFCCR_CM_ARGB4444	3
+#define DMA2D_OPFCCR_CM_ARGB1555	3
+#define DMA2D_OPFCCR_CM_ARGB4444	4
 
 /** DMA2D Output Color Register */
 /* The format of this register depends on PFC control above */