diff --git a/library/bignum_mod_raw.c b/library/bignum_mod_raw.c
index 8ca12d6..0f575fc 100644
--- a/library/bignum_mod_raw.c
+++ b/library/bignum_mod_raw.c
@@ -247,17 +247,17 @@
     return 0;
 }
 
-int mbedtls_mpi_mod_raw_from_mont_rep(mbedtls_mpi_uint *X,
-                                      const mbedtls_mpi_mod_modulus *m)
+int mbedtls_mpi_mod_raw_from_mont_rep( mbedtls_mpi_uint *X,
+                                       const mbedtls_mpi_mod_modulus *N )
 {
-    const size_t t_limbs = mbedtls_mpi_core_montmul_working_limbs(m->limbs);
+    const size_t t_limbs = mbedtls_mpi_core_montmul_working_limbs( N->limbs );
     mbedtls_mpi_uint *T;
 
     if ((T = (mbedtls_mpi_uint *) mbedtls_calloc(t_limbs, ciL)) == NULL) {
         return MBEDTLS_ERR_MPI_ALLOC_FAILED;
     }
 
-    mbedtls_mpi_core_from_mont_rep(X, X, m->p, m->limbs, m->rep.mont.mm, T);
+    mbedtls_mpi_core_from_mont_rep( X, X, N->p, N->limbs, N->rep.mont.mm, T );
 
     mbedtls_platform_zeroize(T, t_limbs * ciL);
     mbedtls_free(T);
diff --git a/library/bignum_mod_raw.h b/library/bignum_mod_raw.h
index 4d5bf41..ed61678 100644
--- a/library/bignum_mod_raw.h
+++ b/library/bignum_mod_raw.h
@@ -422,14 +422,14 @@
 /** Convert an MPI back from Montgomery representation.
  *
  * \param X      The address of the MPI.
- *               Must have the same number of limbs as \p m.
- * \param m      The address of the modulus, which gives the size of
- *               the base `R`= 2^(biL*m->limbs).
+ *               Must have the same number of limbs as \p N.
+ * \param N      The address of the modulus, which gives the size of
+ *               the base `R`= 2^(biL*N->limbs).
  *
  * \return       \c 0 if successful.
  */
-int mbedtls_mpi_mod_raw_from_mont_rep(mbedtls_mpi_uint *X,
-                                      const mbedtls_mpi_mod_modulus *m);
+int mbedtls_mpi_mod_raw_from_mont_rep( mbedtls_mpi_uint *X,
+                                       const mbedtls_mpi_mod_modulus *N );
 
 /** \brief  Perform fixed width modular negation.
  *