diff --git a/src/math/ec_scalar.cpp b/src/math/ec_scalar.cpp
index 729a2ab504..89751146ce 100644
--- a/src/math/ec_scalar.cpp
+++ b/src/math/ec_scalar.cpp
@@ -41,7 +41,7 @@ ec_scalar::ec_scalar(const ec_secret& secret)
 ec_scalar::ec_scalar(uint64_t value)
   : valid_(true)
 {
-    secret_ = zero;
+    secret_ = null_hash;
     auto serial = make_unsafe_serializer(secret_.end() - 4);
     serial.write_4_bytes_big_endian(value);
 }