--- dctc-0.85.5.orig/src/gdl.h
+++ dctc-0.85.5/src/gdl.h
@@ -24,7 +24,11 @@
 #ifndef __GDL_H__
 #define __GDL_H__
 
+#ifndef WITH_GCRYPT
 #include <openssl/md4.h>
+#else
+#define MD4_DIGEST_LENGTH 16
+#endif
 
 typedef struct
 {
--- dctc-0.85.5.orig/src/md_db.c
+++ dctc-0.85.5/src/md_db.c
@@ -31,7 +31,6 @@
 #include <unistd.h>
 #ifdef WITH_GCRYPT
 #include <gcrypt.h>
-#define MD4_DIGEST_LENGTH 16
 #define MD4_ALGO(source,len,dest)   gcry_md_hash_buffer(GCRY_MD_MD4,dest,source,len)
 #else
 #include <openssl/md4.h>
--- dctc-0.85.5.orig/src/md_db.h
+++ dctc-0.85.5/src/md_db.h
@@ -24,7 +24,11 @@
 #ifndef __MD_DB_H__
 #define __MD_DB_H__
 
+#ifndef WITH_GCRYPT
 #include <openssl/md4.h>
+#else
+#define MD4_DIGEST_LENGTH 16
+#endif
 
 #define RECORD_BUSY 0x8000000