diff --git a/ChangeLog b/ChangeLog
index 7f44d38ed..e3eee32c4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2011-12-15  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* grub-core/lib/libgcrypt/cipher/md4.c (transform) [WORDS_BIGENDIAN]:
+	Add missing const attribute.
+	* grub-core/lib/libgcrypt/cipher/md5.c (transform) [WORDS_BIGENDIAN]:
+	Likewise.
+	* grub-core/lib/libgcrypt/cipher/rmd160.c (transform) [WORDS_BIGENDIAN]:
+	Likewise.
+
 2011-12-15  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/lib/libgcrypt/cipher/serpent.c (serpent_key_prepare): Fix
diff --git a/grub-core/lib/libgcrypt/cipher/md4.c b/grub-core/lib/libgcrypt/cipher/md4.c
index 680cf87f5..aa180f0d4 100644
--- a/grub-core/lib/libgcrypt/cipher/md4.c
+++ b/grub-core/lib/libgcrypt/cipher/md4.c
@@ -101,7 +101,8 @@ transform ( MD4_CONTEXT *ctx, const unsigned char *data )
 #ifdef WORDS_BIGENDIAN
   {
     int i;
-    byte *p2, *p1;
+    byte *p2;
+    const byte *p1;
     for(i=0, p1=data, p2=(byte*)in; i < 16; i++, p2 += 4 )
       {
 	p2[3] = *p1++;
diff --git a/grub-core/lib/libgcrypt/cipher/md5.c b/grub-core/lib/libgcrypt/cipher/md5.c
index 899dce89a..3d3046df2 100644
--- a/grub-core/lib/libgcrypt/cipher/md5.c
+++ b/grub-core/lib/libgcrypt/cipher/md5.c
@@ -92,7 +92,8 @@ transform ( MD5_CONTEXT *ctx, const unsigned char *data )
 #ifdef WORDS_BIGENDIAN
   { 
     int i;
-    byte *p2, *p1;
+    byte *p2;
+    const byte *p1;
     for(i=0, p1=data, p2=(byte*)correct_words; i < 16; i++, p2 += 4 )
       {
         p2[3] = *p1++;
diff --git a/grub-core/lib/libgcrypt/cipher/rmd160.c b/grub-core/lib/libgcrypt/cipher/rmd160.c
index 7805bf53b..73d533739 100644
--- a/grub-core/lib/libgcrypt/cipher/rmd160.c
+++ b/grub-core/lib/libgcrypt/cipher/rmd160.c
@@ -169,7 +169,8 @@ transform ( RMD160_CONTEXT *hd, const unsigned char *data )
   u32 x[16];
   {
     int i;
-    byte *p2, *p1;
+    byte *p2;
+    const byte *p1;
     for (i=0, p1=data, p2=(byte*)x; i < 16; i++, p2 += 4 )
       {
         p2[3] = *p1++;