diff --git a/cpukit/ChangeLog b/cpukit/ChangeLog
index 81dc156b42..f107c002e3 100644
--- a/cpukit/ChangeLog
+++ b/cpukit/ChangeLog
@@ -1,3 +1,7 @@
+2010-06-14	Sebastian Huber <sebastian.huber@embedded-brains.de>
+
+	* libmd/md5.h: Define MD5_DIGEST_SIZE.
+
 2010-06-14	Sebastian Huber <sebastian.huber@embedded-brains.de>
 
 	PR 1555/cpukit
diff --git a/cpukit/libmd/md5.h b/cpukit/libmd/md5.h
index 1756a31228..432853d800 100644
--- a/cpukit/libmd/md5.h
+++ b/cpukit/libmd/md5.h
@@ -44,6 +44,8 @@
 /* typedef a 32-bit type */
 typedef uint32_t UINT4;
 
+#define MD5_DIGEST_SIZE 16
+
 /* Data structure for MD5 (Message-Digest) computation */
 typedef struct {
   UINT4 i[2];                   /* number of _bits_ handled mod 2^64 */