diff --git a/chore/goimp/goimp.go b/chore/goimp/goimp.go
index 8bbee021..85590730 100644
--- a/chore/goimp/goimp.go
+++ b/chore/goimp/goimp.go
@@ -17,12 +17,9 @@ import (
 	"fmt"
 	"go/importer"
 	"go/token"
-	"go/types"
 	"os"
 	"path/filepath"
 	"runtime"
-
-	"golang.org/x/tools/go/gcexportdata"
 )
 
 func main() {
@@ -31,13 +28,7 @@ func main() {
 	fmt.Println("GOMODCACHE:", val)
 
 	var fset = token.NewFileSet()
-	var imp types.Importer
-	if true {
-		imp = importer.ForCompiler(fset, "source", nil)
-	} else {
-		packages := make(map[string]*types.Package)
-		imp = gcexportdata.NewImporter(fset, packages)
-	}
+	imp := importer.ForCompiler(fset, "source", nil)
 
 	_, err := imp.Import("go/types")
 	fmt.Println("Import result:", err)
diff --git a/package_test.go b/package_test.go
index 754bb5ea..d1bed594 100644
--- a/package_test.go
+++ b/package_test.go
@@ -32,7 +32,6 @@ import (
 
 	"github.com/goplus/gogen"
 	"github.com/goplus/gogen/packages"
-	"golang.org/x/tools/go/gcexportdata"
 )
 
 var (
@@ -337,9 +336,7 @@ func bar(v mytype) rune {
 		t.Fatal("parser.ParseFile:", err)
 	}
 
-	packages := make(map[string]*types.Package)
-	imp := gcexportdata.NewImporter(fset, packages)
-	conf := types.Config{Importer: imp}
+	conf := types.Config{}
 	pkg, err := conf.Check("foo", fset, []*ast.File{f}, nil)
 	if err != nil {
 		t.Fatal("conf.Check:", err)
@@ -381,9 +378,7 @@ func (p *foo) Bar() {}
 		t.Fatal("parser.ParseFile:", err)
 	}
 
-	packages := make(map[string]*types.Package)
-	imp := gcexportdata.NewImporter(fset, packages)
-	conf := types.Config{Importer: imp}
+	conf := types.Config{}
 	pkg, err := conf.Check("foo", fset, []*ast.File{f}, nil)
 	if err != nil {
 		t.Fatal("conf.Check:", err)