diff --git a/qemu/target-mips/cpu.h b/qemu/target-mips/cpu.h
index 9530c6c5..e0c3ed5d 100644
--- a/qemu/target-mips/cpu.h
+++ b/qemu/target-mips/cpu.h
@@ -19,19 +19,19 @@ typedef struct r4k_tlb_t r4k_tlb_t;
 struct r4k_tlb_t {
     target_ulong VPN;
     uint32_t PageMask;
-    uint_fast8_t ASID;
-    uint_fast16_t G:1;
-    uint_fast16_t C0:3;
-    uint_fast16_t C1:3;
-    uint_fast16_t V0:1;
-    uint_fast16_t V1:1;
-    uint_fast16_t D0:1;
-    uint_fast16_t D1:1;
-    uint_fast16_t XI0:1;
-    uint_fast16_t XI1:1;
-    uint_fast16_t RI0:1;
-    uint_fast16_t RI1:1;
-    uint_fast16_t EHINV:1;
+    uint8_t ASID;
+    uint16_t G:1;
+    uint16_t C0:3;
+    uint16_t C1:3;
+    uint16_t V0:1;
+    uint16_t V1:1;
+    uint16_t D0:1;
+    uint16_t D1:1;
+    uint16_t XI0:1;
+    uint16_t XI1:1;
+    uint16_t RI0:1;
+    uint16_t RI1:1;
+    uint16_t EHINV:1;
     uint64_t PFN[2];
 };