diff --git a/helper/proc/files.go b/helper/proc/files.go
index e41c3ef..0612718 100644
--- a/helper/proc/files.go
+++ b/helper/proc/files.go
@@ -6,11 +6,18 @@ import (
 	"os/exec"
 	"sync/atomic"
 	"syscall"
+	"testing"
 	"time"
 )
 
 var FulfillmentTimeout = 2 * time.Second
 
+func init() {
+	if testing.Testing() {
+		FulfillmentTimeout *= 10
+	}
+}
+
 // A File is an extra file with deferred initialisation.
 type File interface {
 	// Init initialises File state. Init must not be called more than once.