diff --git a/hw/sun4m.c b/hw/sun4m.c
index 8b3c49ddb5..55abfe8b7d 100644
--- a/hw/sun4m.c
+++ b/hw/sun4m.c
@@ -823,8 +823,8 @@ static const struct hwdef hwdefs[] = {
         .esp_base     = 0xef0800000ULL,
         .le_base      = 0xef0c00000ULL,
         .apc_base     = 0xefa000000ULL, // XXX should not exist
-        .aux1_base    = 0xff1900000ULL, // XXX 0xff1800000ULL,
-        .aux2_base    = 0xff1910000ULL, // XXX 0xff1a01000ULL,
+        .aux1_base    = 0xff1800000ULL,
+        .aux2_base    = 0xff1a01000ULL,
         .ecc_base     = 0xf00000000ULL,
         .ecc_version  = 0x20000000, // version 0, implementation 2
         .sun4c_intctl_base  = -1,