c3-lang/libtommath

diff --git a/bn_mp_mul.c b/bn_mp_mul.c
index c457a9e..c69c349 100644
--- a/bn_mp_mul.c
+++ b/bn_mp_mul.c
@@ -73,7 +73,7 @@ GO_ON:
 #endif
          {
 #ifdef BN_S_MP_MUL_DIGS_C
-            res = s_mp_mul(a, b, c); /* uses s_mp_mul_digs */
+            res = s_mp_mul_digs(a, b, c, a->used + b->used + 1);
 #else
             res = MP_VAL;
 #endif
@@ -84,4 +84,3 @@ END:
    return res;
 }
 #endif
-
diff --git a/tommath_private.h b/tommath_private.h
index 35639a5..2377e17 100644
--- a/tommath_private.h
+++ b/tommath_private.h
@@ -36,7 +36,6 @@ extern void MP_FREE(void *mem, size_t size);
 /* lowlevel functions, do not call! */
 int s_mp_add(const mp_int *a, const mp_int *b, mp_int *c);
 int s_mp_sub(const mp_int *a, const mp_int *b, mp_int *c);
-#define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
 int fast_s_mp_mul_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs);
 int s_mp_mul_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs);
 int fast_s_mp_mul_high_digs(const mp_int *a, const mp_int *b, mp_int *c, int digs);