diff --git a/internal/pkg/config/config.example.yaml b/internal/pkg/config/config.example.yaml
index 74d97fd..13c435b 100644
--- a/internal/pkg/config/config.example.yaml
+++ b/internal/pkg/config/config.example.yaml
@@ -25,7 +25,8 @@ runner:
   timeout: 3h
   # The timeout for the runner to wait for running jobs to finish when shutting down.
   # Any running jobs that haven't finished after this timeout will be cancelled.
-  shutdown_timeout: 0s
+  # Defaults to the same value as timeout if unset or 0.
+  shutdown_timeout: 3h
   # Whether skip verifying the TLS certificate of the instance.
   insecure: false
   # The timeout for fetching the job from the Forgejo instance.
diff --git a/internal/pkg/config/config.go b/internal/pkg/config/config.go
index 5c260fb..a31af46 100644
--- a/internal/pkg/config/config.go
+++ b/internal/pkg/config/config.go
@@ -121,6 +121,9 @@ func LoadDefault(file string) (*Config, error) {
 	if cfg.Runner.Timeout <= 0 {
 		cfg.Runner.Timeout = 3 * time.Hour
 	}
+	if cfg.Runner.ShutdownTimeout <= 0 {
+		cfg.Runner.ShutdownTimeout = cfg.Runner.Timeout
+	}
 	if cfg.Cache.Enabled == nil {
 		b := true
 		cfg.Cache.Enabled = &b