diff --git a/mvm/include/mvm/bus.h b/mvm/include/mvm/bus.h
index a515068..de38876 100644
--- a/mvm/include/mvm/bus.h
+++ b/mvm/include/mvm/bus.h
@@ -9,6 +9,12 @@
 #include <stdint.h>
 #include <stddef.h>
 
+/* Helper macros */
+#define NVM_BUS_FIRST(BUSCTL_P) \
+    (BUSCTL_P)->head
+#define NVM_BUS_NEXT(DEV_P)     \
+    (DEV_P)->next
+
 /*
  * Represents valid device types that can be
  * on the bus.