diff --git a/xmlsecurity/source/xmlsec/mscrypt/seinitializer_mscryptimpl.cxx b/xmlsecurity/source/xmlsec/mscrypt/seinitializer_mscryptimpl.cxx
index 72063a140240..cf1ef2ffa0f9 100644
--- a/xmlsecurity/source/xmlsec/mscrypt/seinitializer_mscryptimpl.cxx
+++ b/xmlsecurity/source/xmlsec/mscrypt/seinitializer_mscryptimpl.cxx
@@ -67,7 +67,7 @@ cssu::Reference< cssxc::XXMLSecurityContext > SAL_CALL
     //Initialize the crypto engine
     if( sCertDB.getLength() > 0 )
     {
-        rtl::OString sCertDir(sCertDB, sCertDB.getLength(), RTL_TEXTENCODING_ASCII_US);
+        rtl::OString sCertDir(sCertDB.getStr(), sCertDB.getLength(), RTL_TEXTENCODING_ASCII_US);
         n_pCertStore = sCertDir.getStr();
         n_hStoreHandle = CertOpenSystemStore( NULL, n_pCertStore ) ;
         if( n_hStoreHandle == NULL )