diff --git a/options.h b/options.h
index c13a12e92f65926bbe1c9724aad5a806e1b0fa75..2d6f7b617cce8e0f085a7c0383be80ad94ae1988 100644
--- a/options.h
+++ b/options.h
@@ -86,7 +86,8 @@ much traffic. */
 #define DROPBEAR_AES128
 #define DROPBEAR_3DES
 #define DROPBEAR_AES256
-#define DROPBEAR_BLOWFISH
+/* Compiling in Blowfish will add ~6kB to runtime heap memory usage */
+/*#define DROPBEAR_BLOWFISH*/
 #define DROPBEAR_TWOFISH256
 #define DROPBEAR_TWOFISH128