diff --git a/pmuxproc/pmuxproc.go b/pmuxproc/pmuxproc.go
index 53cdde6..f2c10e3 100644
--- a/pmuxproc/pmuxproc.go
+++ b/pmuxproc/pmuxproc.go
@@ -45,7 +45,7 @@ type Config struct {
 
 	// NoRestartOn indicates which exit codes should result in the process not
 	// being restarted any further.
-	NoRestartOn []int `yaml:"no_restart_on"`
+	NoRestartOn []int `yaml:"noRestartOn"`
 }
 
 func (cfg Config) withDefaults() Config {