diff --git a/hw/tpm/tpm_tis.h b/hw/tpm/tpm_tis.h
index 1a0db23367..db78d51e4f 100644
--- a/hw/tpm/tpm_tis.h
+++ b/hw/tpm/tpm_tis.h
@@ -41,7 +41,7 @@ typedef enum {
 typedef struct TPMLocality {
     TPMTISState state;
     uint8_t access;
-    uint8_t sts;
+    uint32_t sts;
     uint32_t inte;
     uint32_t ints;