diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 077e7ee69e3d8cb22a671817eececec4a5db7637..3e5dcdd48a4998ddc3b59ee77b376d909e345e84 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -1196,7 +1196,7 @@ union perf_mem_data_src {
 
 #define PERF_MEM_SNOOPX_FWD	0x01 /* forward */
 /* 1 free */
-#define PERF_MEM_SNOOPX_SHIFT	37
+#define PERF_MEM_SNOOPX_SHIFT	38
 
 /* locked instruction */
 #define PERF_MEM_LOCK_NA	0x01 /* not available */