diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index 7d30c9243..5ae358d52 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -245,7 +245,7 @@ func init() {
 		// If we're a full node on mainnet without --cache specified, bump default cache allowance
 		if ctx.GlobalString(utils.SyncModeFlag.Name) != "light" && !ctx.GlobalIsSet(utils.CacheFlag.Name) && !ctx.GlobalIsSet(utils.NetworkIdFlag.Name) {
 			// Make sure we're not on any supported preconfigured testnet either
-			if !ctx.GlobalIsSet(utils.TestnetFlag.Name) && !ctx.GlobalIsSet(utils.RinkebyFlag.Name) && !ctx.GlobalIsSet(utils.GoerliFlag.Name) {
+			if !ctx.GlobalIsSet(utils.TestnetFlag.Name) && !ctx.GlobalIsSet(utils.RinkebyFlag.Name) && !ctx.GlobalIsSet(utils.GoerliFlag.Name) && !ctx.GlobalIsSet(utils.DeveloperFlag.Name) {
 				// Nope, we're really on mainnet. Bump that cache up!
 				log.Info("Bumping default cache on mainnet", "provided", ctx.GlobalInt(utils.CacheFlag.Name), "updated", 4096)
 				ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(4096))