@@ -60,16 +60,16 @@
 @property OF_NULLABLE_PROPERTY (assign) id <OFTLSSocketDelegate> delegate;
 
 /*!
  * The path to the X.509 certificate file to use.
  */
-@property OF_NULLABLE_PROPERTY (copy) OFString *certificateFile;
+@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *certificateFile;
 
 /*!
  * The path to the PKCS#8 private key file to use.
  */
-@property OF_NULLABLE_PROPERTY (copy) OFString *privateKeyFile;
+@property OF_NULLABLE_PROPERTY (nonatomic, copy) OFString *privateKeyFile;
 
 /*!
  * The passphrase to decrypt the PKCS#8 private key file.
  *
  * @warning You have to ensure that this is in secure memory protected from