diff --git a/wmi/src/wmi_unified_tlv.c b/wmi/src/wmi_unified_tlv.c
index cd1400b8c2..65f3d173de 100644
--- a/wmi/src/wmi_unified_tlv.c
+++ b/wmi/src/wmi_unified_tlv.c
@@ -3873,9 +3873,10 @@ static QDF_STATUS send_setup_install_key_cmd_tlv(wmi_unified_t wmi_handle,
 	wmi_mtrace(WMI_VDEV_INSTALL_KEY_CMDID, cmd->vdev_id, 0);
 	status = wmi_unified_cmd_send(wmi_handle, buf, len,
 					      WMI_VDEV_INSTALL_KEY_CMDID);
-	if (QDF_IS_STATUS_ERROR(status))
+	if (QDF_IS_STATUS_ERROR(status)) {
+		qdf_mem_zero(wmi_buf_data(buf), len);
 		wmi_buf_free(buf);
-
+	}
 	return status;
 }