diff --git a/build/params_hyperspace.go b/build/params_hyperspace.go
index 065f8c15c..b76ea1bce 100644
--- a/build/params_hyperspace.go
+++ b/build/params_hyperspace.go
@@ -4,6 +4,8 @@
 package build
 
 import (
+	"math"
+
 	"github.com/ipfs/go-cid"
 
 	"github.com/filecoin-project/go-address"
diff --git a/build/params_interop.go b/build/params_interop.go
index f716927aa..cd5299f17 100644
--- a/build/params_interop.go
+++ b/build/params_interop.go
@@ -4,6 +4,7 @@
 package build
 
 import (
+	"math"
 	"os"
 	"strconv"