diff --git a/succbone/succd/process.go b/succbone/succd/process.go
index 313af1d..31bc1fa 100644
--- a/succbone/succd/process.go
+++ b/succbone/succd/process.go
@@ -154,7 +154,7 @@ func (d *daemon) processOnce(_ context.Context) error {
 			d.safety.highPressure = true
 			klog.Errorf("Pressure is too high; enabling diffusion pump lockout")
 		}
-	} else {
+	} else if mbar < (1e-1)-(1e-2) {
 		if d.safety.highPressure {
 			d.safety.highPressure = false
 			klog.Infof("Pressure is low enough for diffusion pump operation; quitting diffusion pump lockout")