diff --git a/bench/bench_bn.c b/bench/bench_bn.c
index 466e1d4e7..18640af9a 100644
--- a/bench/bench_bn.c
+++ b/bench/bench_bn.c
@@ -1000,14 +1000,10 @@ static void arith(void) {
 
 #if defined(WITH_EP) && defined(EP_ENDOM) && (EP_MUL == LWNAF || EP_FIX == COMBS || EP_FIX == LWNAF || EP_SIM == INTER || !defined(STRIP))
 	if (ep_param_set_any_endom() == RLC_OK) {
-		for (size_t i = 0; i < 3; i++) {
-			bn_copy(d[i], ep_curve_get_v1()[i]);
-			bn_copy(e[i], ep_curve_get_v2()[i]);
-		}
 		BENCH_RUN("bn_rec_glv") {
 			ep_curve_get_ord(c);
 			bn_rand_mod(a, c);
-			BENCH_ADD(bn_rec_glv(a, b, a, c, (const bn_t *)d, (const bn_t *)e));
+			BENCH_ADD(bn_rec_glv(a, b, a, c, ep_curve_get_v1(), ep_curve_get_v2()));
 		}
 		BENCH_END;
 	}
diff --git a/include/relic_bn.h b/include/relic_bn.h
index 7b1a39587..403df0694 100644
--- a/include/relic_bn.h
+++ b/include/relic_bn.h
@@ -1525,8 +1525,8 @@ void bn_rec_jsf(int8_t *jsf, size_t *len, const bn_t k, const bn_t l);
  * @param[in] v1			- the set of parameters v1 for the GLV method.
  * @param[in] v2			- the set of parameters v2 for the GLV method.
  */
-void bn_rec_glv(bn_t k0, bn_t k1, const bn_t k, const bn_t n, const bn_t v1[],
-		const bn_t v2[]);
+void bn_rec_glv(bn_t k0, bn_t k1, const bn_t k, const bn_t n, const bn_st *v1,
+		const bn_st *v2);
 
 /**
  * Recodes a scalar in subscalars according to Frobenius endomorphism.
@@ -1545,14 +1545,15 @@ void bn_rec_frb(bn_t *ki, int sub, const bn_t k, const bn_t x, const bn_t n,
  * Recodes subscalars in the signed aligned column representation..
  *
  * @param[out] b			- the recoded subscalars.
- * @param[in] len			- the length in bytes of the recoding.
+ * @param[in,out] len		- the length in bytes of the recoding.
  * @param[in] k				- the subscalars to recode.
  * @param[in] c				- the splitting factor.
  * @param[in] m				- the number of subscalars to recode.
  * @param[in] n				- the bit length of the group order.
  * @throw ERR_NO_BUFFER		- if the buffer capacity is insufficient.
  */
-void bn_rec_sac(int8_t *b, size_t *len, bn_t *k, size_t c, size_t m, size_t n);
+void bn_rec_sac(int8_t *b, size_t *len, const bn_t *k, size_t c, size_t m,
+		size_t n);
 
 /**
  * Computes the coefficients of the polynomial representing the Lagrange
diff --git a/include/relic_ep.h b/include/relic_ep.h
index 821fb8b8f..f81a9c95c 100644
--- a/include/relic_ep.h
+++ b/include/relic_ep.h
@@ -540,12 +540,12 @@ dig_t *ep_curve_get_beta(void);
 /**
  * Returns the parameter V1 of the prime curve.
  */
-const bn_t *ep_curve_get_v1(void);
+const bn_st *ep_curve_get_v1(void);
 
 /**
  * Returns the parameter V2 of the prime curve.
  */
-const bn_t *ep_curve_get_v2(void);
+const bn_st *ep_curve_get_v2(void);
 
 /**
  * Returns a optimization identifier based on the a-coefficient of the curve.