diff --git a/hw/sun4m_iommu.c b/hw/sun4m_iommu.c
index 7f5dad535ca8d9e2d354eaadd5a5fbac527e7f86..6eeadfa18438b9faa7c8e80004d4560a1055fc6d 100644
--- a/hw/sun4m_iommu.c
+++ b/hw/sun4m_iommu.c
@@ -130,8 +130,8 @@ typedef struct IOMMUState {
     SysBusDevice busdev;
     uint32_t regs[IOMMU_NREGS];
     target_phys_addr_t iostart;
-    uint32_t version;
     qemu_irq irq;
+    uint32_t version;
 } IOMMUState;
 
 static uint32_t iommu_mem_readl(void *opaque, target_phys_addr_t addr)