diff --git a/lib/des/rsa-imath.c b/lib/des/rsa-imath.c
index fad2c29cf..66814fb02 100644
--- a/lib/des/rsa-imath.c
+++ b/lib/des/rsa-imath.c
@@ -47,7 +47,6 @@ RCSID("$Id$");
 #include <roken.h>
 
 #include "imath/imath.h"
-#include "imath/rsamath.h"
 #include "imath/iprime.h"
 
 #define USE_CRT 0