diff --git a/cmd/microservice-ethereum-worker-server/main.go b/cmd/microservice-ethereum-worker-server/main.go
index 39a1b3907..9d7033c5b 100644
--- a/cmd/microservice-ethereum-worker-server/main.go
+++ b/cmd/microservice-ethereum-worker-server/main.go
@@ -122,11 +122,11 @@ func main() {
 
 	globalUtilityRewards := make([]appTypes.UtilityName, 0)
 
-	for i, s := range strings.Split(globalUtilityRewards_, ",") {
+	for _, s := range strings.Split(globalUtilityRewards_, ",") {
 		if s == "" {
 			continue
 		}
-		globalUtilityRewards[i] = appTypes.UtilityName(s)
+		globalUtilityRewards = append(globalUtilityRewards, appTypes.UtilityName(s))
 	}
 
 	for _, details := range strings.Split(tokenDetails_, ",") {