diff --git a/config/versions/v4.go b/config/versions/v4.go
index ff52dad9a1a..f3c7dc9e5c1 100644
--- a/config/versions/v4.go
+++ b/config/versions/v4.go
@@ -19,7 +19,7 @@ func init() {
 
 // defaultConfig contains the stateless V4 representation of orderbookManager
 // Note: Do not be tempted to use a constant for Duration. Whilst defaults are still written to config, we need to manage default upgrades discretely.
-var defaultFuturesTrackingSeekDuration = strconv.Itoa(int(time.Hour) * 24 * 365)
+var defaultFuturesTrackingSeekDuration = strconv.FormatInt(int64(time.Hour)*24*365, 10)
 
 var defaultConfig = []byte(`{
   "enabled": true,