diff --git a/qemu/target-i386/cpu.h b/qemu/target-i386/cpu.h
index abf62aa7..c45912f3 100644
--- a/qemu/target-i386/cpu.h
+++ b/qemu/target-i386/cpu.h
@@ -954,7 +954,7 @@ typedef struct CPUX86State {
     uint8_t has_error_code;
     uint32_t sipi_vector;
     bool tsc_valid;
-    int tsc_khz;
+    int64_t tsc_khz;
     void *kvm_xsave_buf;
 
     uint64_t mcg_cap;