diff --git a/vendor/github.com/prometheus/procfs/xfrm.go b/vendor/github.com/prometheus/procfs/xfrm.go
index 30aa417..eed07c7 100644
--- a/vendor/github.com/prometheus/procfs/xfrm.go
+++ b/vendor/github.com/prometheus/procfs/xfrm.go
@@ -112,8 +112,7 @@
 		fields := strings.Fields(s.Text())
 
 		if len(fields) != 2 {
-			return XfrmStat{}, fmt.Errorf(
-				"couldn't parse %s line %s", file.Name(), s.Text())
+			return XfrmStat{}, fmt.Errorf("couldn't parse %q line %q", file.Name(), s.Text())
 		}
 
 		name := fields[0]