diff --git a/library/rsa.c b/library/rsa.c
index 5b9ce70279a2caff884e0ef52d1d64d3ce645472..4da054be20254749afe2fa09ec0610c1b4d3a24b 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -978,7 +978,7 @@ int mbedtls_rsa_private(mbedtls_rsa_context *ctx,
      */
     MBEDTLS_MPI_CHK(rsa_prepare_blinding(ctx, f_rng, p_rng));
     MBEDTLS_MPI_CHK(mbedtls_mpi_mul_mpi(&T, &T, &ctx->Vi));
-    
+    MBEDTLS_MPI_CHK(mbedtls_mpi_mod_mpi(&T, &T, &ctx->N));
     MBEDTLS_MPI_CHK(mbedtls_mpi_copy(&input_blinded, &T));
 
     /*