diff --git a/src/rand.c b/src/rand.c
index e90b8c1..c315d01 100644
--- a/src/rand.c
+++ b/src/rand.c
@@ -155,7 +155,7 @@ static unsigned int check_allowed_zeros(pb_poly *polynom)
  * @param entropy_source the source of entropy you want
  * @return newly allocated polynomial, must be freed with delete_polynom()
  */
-pb_poly *ntru_get_poly_small(int length, int entropy_source)
+pb_poly *ntru_get_random_poly_ternary(int length, int entropy_source)
 {
 	mp_int chara;
 	init_integer(&chara);
diff --git a/src/rand.h b/src/rand.h
index 6dc08c3..4e21c4a 100644
--- a/src/rand.h
+++ b/src/rand.h
@@ -36,8 +36,8 @@
  */
 #define GET_INT_FROM_RRAND 3
 
-pb_poly *ntru_get_poly_small(int length, int entropy_source);
-pb_poly *ntru_get_poly_big(int length, int entropy_source, mp_int *upper_bound,
+pb_poly *ntru_get_random_poly_ternary(int length, int entropy_source);
+pb_poly *ntru_get_poly_big(size_t length, int entropy_source, mp_int *upper_bound,
 		mp_int *lower_bound);
 
 #endif /* NTRU_RAND_H */