diff --git a/win_build/installerv2/redist/Windows/src/boinccas/CACreateProjectInitFile.cpp b/win_build/installerv2/redist/Windows/src/boinccas/CACreateProjectInitFile.cpp
index b6ee0c4992..1a1b7565b1 100644
--- a/win_build/installerv2/redist/Windows/src/boinccas/CACreateProjectInitFile.cpp
+++ b/win_build/installerv2/redist/Windows/src/boinccas/CACreateProjectInitFile.cpp
@@ -114,7 +114,7 @@ tstring CACreateProjectInitFile::ParseParameter(tstring& strSetupExeName, tstrin
         // WCG didn't want to have to encode their setup cookie value.  So all parameters but the setup cookie
         // are base64 encoded.
         //
-        if (strParameterName == _T("asc")) {
+        if (strParameterName == _T("asc_")) {
 
             strParameterValue = strEncodedValue;