diff --git a/src/math/export_test.go b/src/math/export_test.go
index 5f15bdb025d2dc..53d9205b9d1693 100644
--- a/src/math/export_test.go
+++ b/src/math/export_test.go
@@ -9,5 +9,6 @@ var ExpGo = exp
 var Exp2Go = exp2
 var HypotGo = hypot
 var SqrtGo = sqrt
-var ReduceThreshold = reduceThreshold
 var TrigReduce = trigReduce
+
+const ReduceThreshold = reduceThreshold