diff --git a/include/libopencm3/stm32/memorymap.h b/include/libopencm3/stm32/memorymap.h
index 63c88da1..e3c57c83 100644
--- a/include/libopencm3/stm32/memorymap.h
+++ b/include/libopencm3/stm32/memorymap.h
@@ -104,6 +104,9 @@
 /* PERIPH_BASE_AHB + 0x18000 (0x4003 0000 - 0x4FFF FFFF): Reserved */
 #define USB_OTG_FS_BASE			(PERIPH_BASE_AHB + 0xffe8000)
 
+/* PPIB */
+#define DBGMCU_BASE			(PPBI_BASE + 0x00042000)
+
 /* FSMC */
 #define FSMC_BASE			(PERIPH_BASE +  0x60000000)