diff --git a/library/des.c b/library/des.c
index 153810d..6e15234 100644
--- a/library/des.c
+++ b/library/des.c
@@ -1,7 +1,7 @@
 /*
  *  FIPS-46-3 compliant Triple-DES implementation
  *
- *  Copyright (C) 2006-2013, Brainspark B.V.
+ *  Copyright (C) 2006-2014, Brainspark B.V.
  *
  *  This file is part of PolarSSL (http://www.polarssl.org)
  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
@@ -35,6 +35,12 @@
 
 #include "polarssl/des.h"
 
+#if defined(POLARSSL_PLATFORM_C)
+#include "polarssl/platform.h"
+#else
+#define polarssl_printf printf
+#endif
+
 #if !defined(POLARSSL_DES_ALT)
 
 /*
@@ -839,9 +845,9 @@
         v = i  & 1;
 
         if( verbose != 0 )
-            printf( "  DES%c-ECB-%3d (%s): ",
-                    ( u == 0 ) ? ' ' : '3', 56 + u * 56,
-                    ( v == DES_DECRYPT ) ? "dec" : "enc" );
+            polarssl_printf( "  DES%c-ECB-%3d (%s): ",
+                             ( u == 0 ) ? ' ' : '3', 56 + u * 56,
+                             ( v == DES_DECRYPT ) ? "dec" : "enc" );
 
         memcpy( buf, des3_test_buf, 8 );
 
@@ -889,17 +895,17 @@
                 memcmp( buf, des3_test_ecb_enc[u], 8 ) != 0 ) )
         {
             if( verbose != 0 )
-                printf( "failed\n" );
+                polarssl_printf( "failed\n" );
 
             return( 1 );
         }
 
         if( verbose != 0 )
-            printf( "passed\n" );
+            polarssl_printf( "passed\n" );
     }
 
     if( verbose != 0 )
-        printf( "\n" );
+        polarssl_printf( "\n" );
 
 #if defined(POLARSSL_CIPHER_MODE_CBC)
     /*
@@ -911,9 +917,9 @@
         v = i  & 1;
 
         if( verbose != 0 )
-            printf( "  DES%c-CBC-%3d (%s): ",
-                    ( u == 0 ) ? ' ' : '3', 56 + u * 56,
-                    ( v == DES_DECRYPT ) ? "dec" : "enc" );
+            polarssl_printf( "  DES%c-CBC-%3d (%s): ",
+                             ( u == 0 ) ? ' ' : '3', 56 + u * 56,
+                             ( v == DES_DECRYPT ) ? "dec" : "enc" );
 
         memcpy( iv,  des3_test_iv,  8 );
         memcpy( prv, des3_test_iv,  8 );
@@ -984,18 +990,18 @@
                 memcmp( buf, des3_test_cbc_enc[u], 8 ) != 0 ) )
         {
             if( verbose != 0 )
-                printf( "failed\n" );
+                polarssl_printf( "failed\n" );
 
             return( 1 );
         }
 
         if( verbose != 0 )
-            printf( "passed\n" );
+            polarssl_printf( "passed\n" );
     }
 #endif /* POLARSSL_CIPHER_MODE_CBC */
 
     if( verbose != 0 )
-        printf( "\n" );
+        polarssl_printf( "\n" );
 
     return( 0 );
 }