diff --git a/source/org/jivesoftware/smack/XMPPConnection.java b/source/org/jivesoftware/smack/XMPPConnection.java
index a2b7a4de8..d6d1e0f39 100644
--- a/source/org/jivesoftware/smack/XMPPConnection.java
+++ b/source/org/jivesoftware/smack/XMPPConnection.java
@@ -1316,7 +1316,7 @@ public class XMPPConnection {
             }
             else if(configuration.getKeystoreType().equals("PKCS11")) {
                 try {
-                    Constructor c = Class.forName("sun.security.pkcs11.SunPKCS11").getConstructor(String.class);
+                    Constructor c = Class.forName("sun.security.pkcs11.SunPKCS11").getConstructor(InputStream.class);
                     String pkcs11Config = "name = SmartCard\nlibrary = "+configuration.getPKCSConfig();
                     ByteArrayInputStream config = new ByteArrayInputStream(pkcs11Config.getBytes());
                     Provider p = (Provider)c.newInstance(config);