diff --git a/qemu/target/mips/cpu.h b/qemu/target/mips/cpu.h
index 04a068b3..f83fef26 100644
--- a/qemu/target/mips/cpu.h
+++ b/qemu/target/mips/cpu.h
@@ -324,6 +324,7 @@ struct CPUMIPSState {
     target_ulong CP0_BadVAddr;
     uint32_t CP0_BadInstr;
     uint32_t CP0_BadInstrP;
+    uint32_t CP0_BadInstrX;
     int32_t CP0_Count;
     target_ulong CP0_EntryHi;
 #define CP0EnHi_EHINV 10