diff --git a/c_sharp/NSSCSWrapper/NativeCalls.cs b/c_sharp/NSSCSWrapper/NativeCalls.cs
index b622a518..56c2b015 100644
--- a/c_sharp/NSSCSWrapper/NativeCalls.cs
+++ b/c_sharp/NSSCSWrapper/NativeCalls.cs
@@ -275,7 +275,7 @@ namespace Novell.CASA
 		public static extern IntPtr miCASAOpenSecretStoreCache
 			(
 			[In, Out] SSCS_SECRET_STORE_ID_T	ssid,
-			ulong					 			ssFlags, 
+			uint					 			ssFlags, 
 			[In, Out] SSCS_EXT_T				ext
 			);