diff --git a/programs/pkey/rsa_encrypt.c b/programs/pkey/rsa_encrypt.c
index 97243cc..0b54a17 100644
--- a/programs/pkey/rsa_encrypt.c
+++ b/programs/pkey/rsa_encrypt.c
@@ -1,7 +1,7 @@
 /*
  *  RSA simple data encryption program
  *
- *  Copyright (C) 2006-2010, Brainspark B.V.
+ *  Copyright (C) 2006-2011, Brainspark B.V.
  *
  *  This file is part of PolarSSL (http://www.polarssl.org)
  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@@ -37,8 +37,11 @@
 
 #if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) ||  \
     !defined(POLARSSL_HAVEGE_C) || !defined(POLARSSL_FS_IO)
-int main( void )
+int main( int argc, char *argv[] )
 {
+    ((void) argc);
+    ((void) argv);
+
     printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or "
            "POLARSSL_HAVEGE_C and/or POLARSSL_FS_IO not defined.\n");
     return( 0 );
@@ -62,7 +65,7 @@
     {
         printf( "usage: rsa_encrypt <string of max 100 characters>\n" );
 
-#ifdef WIN32
+#if defined(_WIN32)
         printf( "\n" );
 #endif
 
@@ -133,7 +136,7 @@
 
 exit:
 
-#ifdef WIN32
+#if defined(_WIN32)
     printf( "  + Press Enter to exit this program.\n" );
     fflush( stdout ); getchar();
 #endif