1 files changed, 2 insertions, 2 deletions
diff --git a/src/math/numbertheory/numthry.cpp b/src/math/numbertheory/numthry.cpp
index 58275fb4f..c431fb63f 100644
--- a/src/math/numbertheory/numthry.cpp
+++ b/src/math/numbertheory/numthry.cpp
@@ -322,8 +322,6 @@ bool primality_test(const BigInt& n,
                     RandomNumberGenerator& rng,
                     size_t level)
    {
-   const size_t PREF_NONCE_BITS = 64;
-
    if(n == 2)
       return true;
    if(n <= 1 || n.is_even())
@@ -348,6 +346,8 @@ bool primality_test(const BigInt& n,
    if(level > 2)
       level = 2;
 
+   const size_t PREF_NONCE_BITS = 192;
+
    const size_t NONCE_BITS = std::min(n.bits() - 2, PREF_NONCE_BITS);
 
    MillerRabin_Test mr(n);