diff --git a/include/libopencm3/stm32/l4/dma.h b/include/libopencm3/stm32/l4/dma.h
index 9b1a180e..3a5ee8d1 100644
--- a/include/libopencm3/stm32/l4/dma.h
+++ b/include/libopencm3/stm32/l4/dma.h
@@ -34,4 +34,9 @@
 
 #include <libopencm3/stm32/common/dma_common_l1f013.h>
 
+/* DMA channel selection register (DMAx_CSELR) */
+#define DMA_CSELR(dma_base)		MMIO32((dma_base) + 0xA8)
+#define DMA1_CSELR			DMA_CSELR(DMA1)
+#define DMA2_CSELR			DMA_CSELR(DMA2)
+
 #endif