diff --git a/gosym/pclntab_test.go b/gosym/pclntab_test.go
index b8f167b..1a780bf 100644
--- a/gosym/pclntab_test.go
+++ b/gosym/pclntab_test.go
@@ -208,6 +208,7 @@ func TestPCLine(t *testing.T) {
 	defer endtest()
 
 	f, tab := crack(pclinetestBinary, t)
+	defer f.Close()
 	text := f.Section(".text")
 	textdat, err := text.Data()
 	if err != nil {