diff --git a/fw/wmi_unified.h b/fw/wmi_unified.h
index 3e80364f7f6b..f6c6cf412499 100644
--- a/fw/wmi_unified.h
+++ b/fw/wmi_unified.h
@@ -3096,6 +3096,12 @@ typedef struct {
     A_UINT32 scan_id;
     /**id of VDEV that requested the scan */
     A_UINT32 vdev_id;
+    /** TSF Timestamp when the scan event (wmi_scan_event_type) is completed
+     * In case of AP it is TSF of the AP vdev
+     * In case of STA connected state this is the TSF of the AP
+     * In case of STA not connected it will be the free running HW timer
+     */
+    A_UINT32 tsf_timestamp;
 } wmi_scan_event_fixed_param;
 
 /* WMI Diag event */
diff --git a/fw/wmi_version.h b/fw/wmi_version.h
index 9b47da8116d5..d6a18424e7bc 100644
--- a/fw/wmi_version.h
+++ b/fw/wmi_version.h
@@ -36,7 +36,7 @@
 #define __WMI_VER_MINOR_    0
 /** WMI revision number has to be incremented when there is a
  *  change that may or may not break compatibility. */
-#define __WMI_REVISION_ 427
+#define __WMI_REVISION_ 428
 
 /** The Version Namespace should not be normally changed. Only
  *  host and firmware of the same WMI namespace will work