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-rw-r--r--libtommath/bn_mp_neg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libtommath/bn_mp_neg.c b/libtommath/bn_mp_neg.c
index 777b59b..07fb148 100644
--- a/libtommath/bn_mp_neg.c
+++ b/libtommath/bn_mp_neg.c
@@ -16,7 +16,7 @@
*/
/* b = -a */
-int mp_neg (mp_int * a, mp_int * b)
+int mp_neg (const mp_int * a, mp_int * b)
{
int res;
if (a != b) {