diff --git a/core/config/defaults.go b/core/config/defaults.go
index 761ef2d9a1c..e00e56f4888 100644
--- a/core/config/defaults.go
+++ b/core/config/defaults.go
@@ -1,6 +1,6 @@
 package config
 
-var (
+const (
 	DefaultRPCAddress             = "0.0.0.0:26657"
 	DefaultP2PAddress             = "0.0.0.0:26656"
 	DefaultTestnetPersistentPeers = "0f4be2aaa70e9570eee3485d8fa54502cf1a9fc0@34.67.210.7:26656"