diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 5f1dc8b..742d4f8 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -355,7 +355,7 @@ struct ppc6xx_tlb_t {
 
 typedef struct ppcemb_tlb_t ppcemb_tlb_t;
 struct ppcemb_tlb_t {
-    hwaddr RPN;
+    uint64_t RPN;
     target_ulong EPN;
     target_ulong PID;
     target_ulong size;