--- a/include/struct.h
+++ b/include/struct.h
@@ -39,8 +39,10 @@
 #include <openssl/evp.h>
 #include <openssl/rand.h>
 #include <openssl/md5.h>
+#ifndef OPENSSL_NO_RIPEMD
 #include <openssl/ripemd.h>
 #endif
+#endif
 #include "common.h"
 #include "sys.h"
 #include "hash.h"
--- a/include/auth.h
+++ b/include/auth.h
@@ -37,7 +37,9 @@ typedef	struct {
 #ifdef USE_SSL
 #define AUTHENABLE_SHA1
 #define AUTHENABLE_SSL_CLIENTCERT
+#ifndef OPENSSL_NO_RIPEMD
 #define AUTHENABLE_RIPEMD160
+#endif
 #define AUTHENABLE_SSL_CLIENTCERTFP
 /* OpenSSL provides a crypt() */
 #ifndef AUTHENABLE_UNIXCRYPT