diff --git a/field.go b/field.go
index ac123e9e..79a72562 100644
--- a/field.go
+++ b/field.go
@@ -1261,10 +1261,3 @@ func (f *fieldVal) Inverse() *fieldVal {
 	f.Square().Square().Square().Square().Square() // f = a^(2^256 - 4294968320)
 	return f.Mul(&a45)                             // f = a^(2^256 - 4294968275) = a^(p-2)
 }
-
-// NewFieldVal returns a new field value set to 0.  Callers of this package
-// don't need to work with field values directly.  This is provided for testing
-// purposes.
-func NewFieldVal() *fieldVal {
-	return new(fieldVal)
-}
diff --git a/internal_test.go b/internal_test.go
index c388225b..bd7be965 100644
--- a/internal_test.go
+++ b/internal_test.go
@@ -63,3 +63,9 @@ func (curve *KoblitzCurve) TstAddJacobian(x1, y1, z1, x2, y2, z2, x3, y3, z3 *fi
 func (curve *KoblitzCurve) TstDoubleJacobian(x1, y1, z1, x3, y3, z3 *fieldVal) {
 	curve.doubleJacobian(x1, y1, z1, x3, y3, z3)
 }
+
+// NewFieldVal returns a new field value set to 0.  This is only available to
+// the test package.
+func NewFieldVal() *fieldVal {
+	return new(fieldVal)
+}