diff --git a/tools/src/glob/glob.go b/tools/src/glob/glob.go
index 94648d3..dc55933 100644
--- a/tools/src/glob/glob.go
+++ b/tools/src/glob/glob.go
@@ -82,6 +82,10 @@
 func Scan(root string, cfg Config) ([]string, error) {
 	files := []string{}
 	err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
 		rel, err := filepath.Rel(root, path)
 		if err != nil {
 			rel = path