diff --git a/sdk-api-src/content/wlanapi/nf-wlanapi-wlanscan.md b/sdk-api-src/content/wlanapi/nf-wlanapi-wlanscan.md
index ceb45f71a94..50edcf37b29 100644
--- a/sdk-api-src/content/wlanapi/nf-wlanapi-wlanscan.md
+++ b/sdk-api-src/content/wlanapi/nf-wlanapi-wlanscan.md
@@ -71,7 +71,7 @@ The GUID of the interface to be queried.
### -param pDot11Ssid [in, optional]
-A pointer to a DOT11_SSID structure that specifies the SSID of the network to be scanned. This parameter is optional. When set to NULL, the returned list contains all available networks.
+A pointer to a DOT11_SSID structure that specifies the SSID of the network to be scanned. This parameter may be NULL.
Windows XP with SP3 and Wireless LAN API for Windows XP with SP2: This parameter must be NULL.
### -param pIeData [in, optional]
@@ -202,4 +202,4 @@ Since it becomes more difficult for a wireless interface to send and receive dat
-WlanSetPsdIEDataList
\ No newline at end of file
+WlanSetPsdIEDataList