diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 5a5b0bfda..4d1effe9a 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -279,7 +279,7 @@ typedef struct _machine_ {
     const char *name;
     const char *internal_name;
     uint32_t    type;
-    uint32_t    chipset;
+    uintptr_t   chipset;
     int (*init)(const struct _machine_ *);
     uintptr_t              pad, pad0, pad1, pad2;
     const machine_cpu_t    cpu;