diff --git a/lib/des/imath/imath.c b/lib/des/imath/imath.c
index e4da3d311..46b3bf635 100755
--- a/lib/des/imath/imath.c
+++ b/lib/des/imath/imath.c
@@ -2981,15 +2981,11 @@ static mp_result s_embar(mp_int a, mp_int b, mp_int m, mp_int mu, mp_int c)
 static mp_result s_udiv(mp_int a, mp_int b)
 {
   mpz_t     q, r, t;
-  mpz_t     ac, bc;
   mp_size   ua, ub, qpos = 0;
   mp_digit *da, btop;
   mp_result res = MP_OK;
   int       k, skip = 0;
 
-  mp_int_init(&ac);
-  mp_int_init(&bc);
-
   /* Force signs to positive */
   MP_SIGN(a) = MP_ZPOS;
   MP_SIGN(b) = MP_ZPOS;
@@ -3001,9 +2997,6 @@ static mp_result s_udiv(mp_int a, mp_int b)
   if((res = mp_int_init_size(&q, ua + 1)) != MP_OK) return res;
   if((res = mp_int_init_size(&t, ua + 1)) != MP_OK) goto CLEANUP;
 
-  if((res = mp_int_init_copy(&ac, a)) != MP_OK) goto CLEANUP;
-  if((res = mp_int_init_copy(&bc, b)) != MP_OK) goto CLEANUP;
-
   da = MP_DIGITS(a);
   r.digits = da + ua - 1;  /* The contents of r are shared with a */
   r.used   = 1;
@@ -3070,8 +3063,6 @@ static mp_result s_udiv(mp_int a, mp_int b)
   mp_int_clear(&t);
  CLEANUP:
   mp_int_clear(&q);
-  mp_int_clear(&ac);
-  mp_int_clear(&bc);
   return res;
 }