diff --git a/wlan/v1_0/WlanTypes.idl b/wlan/v1_0/WlanTypes.idl
index 03ba8f2edff1a2515d27fda24d37d83f98dd015d..678ae29ba840c087c94ef5a763b831513cd5944d 100644
--- a/wlan/v1_0/WlanTypes.idl
+++ b/wlan/v1_0/WlanTypes.idl
@@ -51,11 +51,11 @@ struct HdfNetDeviceInfoResult {
 };
 
 struct HdfWifiScanResult {
-    int flags;
+    unsigned int flags;
     unsigned char[] bssid;
-    short caps;
-    int freq;
-    short beaconInt;
+    unsigned short caps;
+    unsigned int freq;
+    unsigned short beaconInt;
     int qual;
     int level;
     unsigned int age;