diff --git a/src/os/exec_test.go b/src/os/exec_test.go
index e960cea02..b8adfb548 100644
--- a/src/os/exec_test.go
+++ b/src/os/exec_test.go
@@ -6,7 +6,6 @@ package os_test
 
 import (
 	. "os"
-	"runtime"
 	"testing"
 )