diff --git a/source/filesystem.go b/source/filesystem.go
index 6c9f4e7c1..d089c143e 100644
--- a/source/filesystem.go
+++ b/source/filesystem.go
@@ -27,7 +27,7 @@ type Filesystem struct {
 }
 
 func (f *Filesystem) Files() []*File {
-	f.captureFiles()
+	if len(f.files)<1 {f.captureFiles()}
 	return f.files
 }