diff --git a/src/cmd/go/go_test.go b/src/cmd/go/go_test.go
index 234e560e6b..04df14fca9 100644
--- a/src/cmd/go/go_test.go
+++ b/src/cmd/go/go_test.go
@@ -2847,7 +2847,7 @@ func TestImportMain(t *testing.T) {
 		func TestFoo(t *testing.T) {}
 	`)
 	tg.setenv("GOPATH", tg.path("."))
-	tg.creatingTemp("x")
+	tg.creatingTemp("x" + exeSuffix)
 	tg.run("build", "x")
 	tg.run("test", "x")