diff --git a/options.h b/options.h
index 0c51bb1..3df2d67 100644
--- a/options.h
+++ b/options.h
@@ -95,12 +95,12 @@ much traffic. */
 #define DROPBEAR_AES256
 /* Compiling in Blowfish will add ~6kB to runtime heap memory usage */
 /*#define DROPBEAR_BLOWFISH*/
-#define DROPBEAR_TWOFISH256
-#define DROPBEAR_TWOFISH128
+/*#define DROPBEAR_TWOFISH256*/
+/*#define DROPBEAR_TWOFISH128*/
 
 /* Enable CBC mode for ciphers. This has security issues though
  * is the most compatible with older SSH implementations */
-#define DROPBEAR_ENABLE_CBC_MODE
+/*#define DROPBEAR_ENABLE_CBC_MODE*/
 
 /* Enable "Counter Mode" for ciphers. This is more secure than normal
  * CBC mode against certain attacks. It is recommended for security
@@ -131,10 +131,10 @@ If you test it please contact the Dropbear author */
  * If you disable MD5, Dropbear will fall back to SHA1 fingerprints,
  * which are not the standard form. */
 #define DROPBEAR_SHA1_HMAC
-#define DROPBEAR_SHA1_96_HMAC
+/*#define DROPBEAR_SHA1_96_HMAC*/
 #define DROPBEAR_SHA2_256_HMAC
 #define DROPBEAR_SHA2_512_HMAC
-#define DROPBEAR_MD5_HMAC
+/*#define DROPBEAR_MD5_HMAC*/
 
 /* You can also disable integrity. Don't bother disabling this if you're
  * still using a cipher, it's relatively cheap. If you disable this it's dead