--- mp3dup.c.orig	2008-09-17 11:17:50.719109264 +0200
+++ mp3dup.c	2008-09-17 11:18:28.545746036 +0200
@@ -17,6 +17,7 @@
 #include <openssl/evp.h>
 #include <glib.h>
 #include <errno.h>
+#include <openssl/md5.h>
 
 /* Note on comparisons
    Given file X and Y, the following cases exist

.