diff --git a/include/hw/s390x/ioinst.h b/include/hw/s390x/ioinst.h
index 3771fff9d4..ea8d0f2444 100644
--- a/include/hw/s390x/ioinst.h
+++ b/include/hw/s390x/ioinst.h
@@ -107,7 +107,7 @@ QEMU_BUILD_BUG_MSG(sizeof(PMCW) != 28, "size of PMCW is wrong");
 #define PMCW_FLAGS_MASK_MP 0x0004
 #define PMCW_FLAGS_MASK_TF 0x0002
 #define PMCW_FLAGS_MASK_DNV 0x0001
-#define PMCW_FLAGS_MASK_INVALID 0x0700
+#define PMCW_FLAGS_MASK_INVALID 0xc300
 
 #define PMCW_CHARS_MASK_ST 0x00e00000
 #define PMCW_CHARS_MASK_MBFC 0x00000004