diff --git a/encoding_test.go b/encoding_test.go
index b2d3fb4..d01a555 100644
--- a/encoding_test.go
+++ b/encoding_test.go
@@ -1,10 +1,16 @@
 package sqids
 
 import (
+	"math"
 	"reflect"
 	"testing"
 )
 
+const (
+	minUint64Value = uint64(0)
+	maxUint64Value = uint64(math.MaxUint64)
+)
+
 func BenchmarkEncodeDecode(b *testing.B) {
 	numbers := []uint64{1, 2, 3, 4, 5}
 
diff --git a/sqids.go b/sqids.go
index 44a5788..4b990f8 100644
--- a/sqids.go
+++ b/sqids.go
@@ -4,15 +4,12 @@ package sqids
 
 import (
 	"errors"
-	"math"
 	"strings"
 )
 
 const (
 	defaultAlphabet   = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
 	minAlphabetLength = 3
-	minUint64Value    = uint64(0)
-	maxUint64Value    = uint64(math.MaxUint64)
 )
 
 var defaultBlocklist []string = newDefaultBlocklist()