diff --git a/src/config.go b/src/config.go
index acc1c66..841b054 100644
--- a/src/config.go
+++ b/src/config.go
@@ -166,8 +166,8 @@ type ObservabilityConfig struct {
 	SlowResponseThreshold Duration `toml:"slow-response-threshold" default:"500ms"`
 }
 
-func (config *Config) DebugJSON() string {
-	result, err := json.MarshalIndent(config, "", "  ")
+func (config *Config) TOML() string {
+	result, err := toml.Marshal(config)
 	if err != nil {
 		panic(err)
 	}
diff --git a/src/main.go b/src/main.go
index 2ae5472..3692623 100644
--- a/src/main.go
+++ b/src/main.go
@@ -269,7 +269,7 @@ func Main() {
 	}
 
 	if *printConfig {
-		fmt.Println(config.DebugJSON())
+		fmt.Println(config.TOML())
 		return
 	}