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-rw-r--r--libtommath/bn_mp_mul_2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libtommath/bn_mp_mul_2.c b/libtommath/bn_mp_mul_2.c
index 33bdc4c..1744681 100644
--- a/libtommath/bn_mp_mul_2.c
+++ b/libtommath/bn_mp_mul_2.c
@@ -16,7 +16,7 @@
*/
/* b = a*2 */
-int mp_mul_2(mp_int *a, mp_int *b)
+int mp_mul_2(const mp_int *a, mp_int *b)
{
int x, res, oldused;