diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c
index b4981d7005..3bc0d10940 100644
--- a/hw/pci-host/apb.c
+++ b/hw/pci-host/apb.c
@@ -66,7 +66,7 @@ do { printf("APB: " fmt , ## __VA_ARGS__); } while (0)
 #define RESET_WCMASK 0x98000000
 #define RESET_WMASK  0x60000000
 
-#define MAX_IVEC 0x30
+#define MAX_IVEC 0x40
 
 typedef struct APBState {
     SysBusDevice busdev;
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 0d29620094..5c2bbd44f5 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -81,7 +81,7 @@
 #define FW_CFG_SPARC64_HEIGHT (FW_CFG_ARCH_LOCAL + 0x01)
 #define FW_CFG_SPARC64_DEPTH (FW_CFG_ARCH_LOCAL + 0x02)
 
-#define IVEC_MAX             0x30
+#define IVEC_MAX             0x40
 
 #define TICK_MAX             0x7fffffffffffffffULL