diff --git a/cmd/ctrld/cli.go b/cmd/ctrld/cli.go
index af42c25..d9deab8 100644
--- a/cmd/ctrld/cli.go
+++ b/cmd/ctrld/cli.go
@@ -449,6 +449,7 @@ func processCDFlags() {
 		},
 	}
 
+	v = viper.NewWithOptions(viper.KeyDelimiter("::"))
 	v.Set("network", cfg.Network)
 	v.Set("upstream", cfg.Upstream)
 	v.Set("listener", cfg.Listener)
diff --git a/cmd/ctrld/main.go b/cmd/ctrld/main.go
index d4362ba..f82ee2f 100644
--- a/cmd/ctrld/main.go
+++ b/cmd/ctrld/main.go
@@ -60,7 +60,7 @@ func initLogging() {
 			fmt.Fprintf(os.Stderr, "failed to create log path: %v", err)
 			os.Exit(1)
 		}
-		logFile, err := os.OpenFile(logFilePath, os.O_APPEND|os.O_CREATE|os.O_RDWR, 0600)
+		logFile, err := os.OpenFile(logFilePath, os.O_APPEND|os.O_CREATE|os.O_RDWR, os.FileMode(0o600))
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "failed to create log file: %v", err)
 			os.Exit(1)