diff --git a/dialog.h b/dialog.h
index 9ac355c6..68f7dff1 100644
--- a/dialog.h
+++ b/dialog.h
@@ -2,12 +2,6 @@
  * Exports and types from dialog.c.
  */
 
-/*
- * This will come in handy for generic control handlers. Anyone
- * knows how to make this more portable, let me know :-)
- */
-#define ATOFFSET(data, offset) ( (void *) ( (char *)(data) + (offset) ) )
-
 /*
  * This is the big union which defines a single control, of any
  * type.
diff --git a/ssh.h b/ssh.h
index 4fee36bf..2d285d23 100644
--- a/ssh.h
+++ b/ssh.h
@@ -190,13 +190,6 @@ void share_setup_x11_channel(ssh_sharing_connstate *cs, share_channel *chan,
 
 Frontend *ssh_get_frontend(Ssh ssh);
 
-/*
- * Useful thing.
- */
-#ifndef lenof
-#define lenof(x) ( (sizeof((x))) / (sizeof(*(x))))
-#endif
-
 #define SSH_CIPHER_IDEA		1
 #define SSH_CIPHER_DES		2
 #define SSH_CIPHER_3DES		3