diff --git a/include/libopencm3/stm32/f1/dma.h b/include/libopencm3/stm32/f1/dma.h
index 897e0c5a..7f9abada 100644
--- a/include/libopencm3/stm32/f1/dma.h
+++ b/include/libopencm3/stm32/f1/dma.h
@@ -256,10 +256,10 @@
 #define DMA_CCR_MSIZE_SHIFT		10
 
 /* PSIZE[9:8]: Peripheral size */
-#define DMA_CCR_PSIZE_8BIT		(0x0 << 10)
-#define DMA_CCR_PSIZE_16BIT		(0x1 << 10)
-#define DMA_CCR_PSIZE_32BIT		(0x2 << 10)
-#define DMA_CCR_PSIZE_MASK		(0x2 << 10)
+#define DMA_CCR_PSIZE_8BIT		(0x0 << 8)
+#define DMA_CCR_PSIZE_16BIT		(0x1 << 8)
+#define DMA_CCR_PSIZE_32BIT		(0x2 << 8)
+#define DMA_CCR_PSIZE_MASK		(0x2 << 8)
 #define DMA_CCR_PSIZE_SHIFT		8
 
 /* MINC: Memory increment mode */