diff --git a/programs/hash/hello.c b/programs/hash/hello.c
index d40c695..d4c362f 100644
--- a/programs/hash/hello.c
+++ b/programs/hash/hello.c
@@ -1,7 +1,7 @@
 /*
  *  Classic "Hello, world" demonstration 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>
@@ -34,18 +34,24 @@
 #include "polarssl/md5.h"
 
 #if !defined(POLARSSL_MD5_C)
-int main( void )
+int main( int argc, char *argv[] )
 {
+    ((void) argc);
+    ((void) argv);
+
     printf("POLARSSL_MD5_C not defined.\n");
     return( 0 );
 }
 #else
-int main( void )
+int main( int argc, char *argv[] )
 {
     int i;
     unsigned char digest[16];
     char str[] = "Hello, world!";
 
+    ((void) argc);
+    ((void) argv);
+
     printf( "\n  MD5('%s') = ", str );
 
     md5( (unsigned char *) str, 13, digest );
@@ -55,7 +61,7 @@
 
     printf( "\n\n" );
 
-#ifdef WIN32
+#if defined(_WIN32)
     printf( "  Press Enter to exit this program.\n" );
     fflush( stdout ); getchar();
 #endif