diff -p -up nmap-5.21/nse_openssl.cc.md2 nmap-5.21/nse_openssl.cc
--- nmap-5.21/nse_openssl.cc.md2	2010-04-08 11:19:21.000000000 -0300
+++ nmap-5.21/nse_openssl.cc	2010-04-08 11:19:24.000000000 -0300
@@ -8,7 +8,9 @@
 #include <openssl/crypto.h>
 #include <openssl/bn.h>
 #include <openssl/rand.h>
+#ifdef HAVE_OPENSSL_MD2_H
 #include <openssl/md2.h>
+#endif
 #include <openssl/md4.h>
 #include <openssl/md5.h>
 #include <openssl/sha.h>
@@ -206,6 +208,7 @@ static int l_rand_pseudo_bytes( lua_Stat
   return 1;
 }
 
+#ifdef HAVE_OPENSSL_MD2_H
 static int l_md2(lua_State *L)     /** md2(string s) */
 {
   size_t len;
@@ -215,6 +218,7 @@ static int l_md2(lua_State *L)     /** m
   lua_pushlstring( L, (char *) MD2( s, len, digest ), 16 );
   return 1;
 }
+#endif
 
 static int l_md4(lua_State *L)     /** md4(string s) */
 {
@@ -469,7 +473,9 @@ static const struct luaL_reg openssllib[
   { "bignum_mod_exp", l_bignum_mod_exp },
   { "rand_bytes", l_rand_bytes },
   { "rand_pseudo_bytes", l_rand_pseudo_bytes },
+#ifdef HAVE_OPENSSL_MD2_H
   { "md2", l_md2 },
+#endif
   { "md4", l_md4 },
   { "md5", l_md5 },
   { "sha1", l_sha1 },