diff --git a/cl/_testgo/runtest/main_test.go b/cl/_testgo/runtest/main_test.go
index 220a4a8e..b8547ad2 100644
--- a/cl/_testgo/runtest/main_test.go
+++ b/cl/_testgo/runtest/main_test.go
@@ -1,6 +1,9 @@
 package main
 
-import "testing"
+import (
+	"os"
+	"testing"
+)
 
 func TestZoo(t *testing.T) {
 	if Zoo() != 3 {
@@ -11,3 +14,10 @@ func TestZoo(t *testing.T) {
 func TestFalse(t *testing.T) {
 	// t.Fatal("false")
 }
+
+func TestSwitchWd(t *testing.T) {
+	_, err := os.Stat("./foo")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
diff --git a/internal/build/build.go b/internal/build/build.go
index c918051d..4b47b3b1 100644
--- a/internal/build/build.go
+++ b/internal/build/build.go
@@ -580,6 +580,7 @@ func linkMainPkg(ctx *context, pkg *packages.Package, pkgs []*aPackage, global l
 	switch mode {
 	case ModeTest:
 		cmd := exec.Command(app, conf.RunArgs...)
+		cmd.Dir = pkg.Dir
 		cmd.Stdout = os.Stdout
 		cmd.Stderr = os.Stderr
 		cmd.Run()