diff --git a/cmd/libs/go2idl/informer-gen/generators/factory.go b/cmd/libs/go2idl/informer-gen/generators/factory.go
index b9dad9b4d52..1f87d04272f 100644
--- a/cmd/libs/go2idl/informer-gen/generators/factory.go
+++ b/cmd/libs/go2idl/informer-gen/generators/factory.go
@@ -68,8 +68,8 @@ func (g *factoryGenerator) GenerateType(c *generator.Context, t *types.Type, w i
 	gvInterfaces := make(map[string]*types.Type)
 	gvNewFuncs := make(map[string]*types.Type)
 	for groupName := range g.groupVersions {
-		gvInterfaces[groupName] = c.Universe.Type(types.Name{Package: packageForGroup(g.outputPackage, g.groupVersions[groupName].Group), Name: "Interface"})
-		gvNewFuncs[groupName] = c.Universe.Function(types.Name{Package: packageForGroup(g.outputPackage, g.groupVersions[groupName].Group), Name: "New"})
+		gvInterfaces[groupName] = c.Universe.Type(types.Name{Package: packageForGroup(vendorless(g.outputPackage), g.groupVersions[groupName].Group), Name: "Interface"})
+		gvNewFuncs[groupName] = c.Universe.Function(types.Name{Package: packageForGroup(vendorless(g.outputPackage), g.groupVersions[groupName].Group), Name: "New"})
 	}
 	m := map[string]interface{}{
 		"cacheSharedIndexInformer":   c.Universe.Type(cacheSharedIndexInformer),
diff --git a/cmd/libs/go2idl/informer-gen/generators/packages.go b/cmd/libs/go2idl/informer-gen/generators/packages.go
index 6d34474e014..b83e5987b8b 100644
--- a/cmd/libs/go2idl/informer-gen/generators/packages.go
+++ b/cmd/libs/go2idl/informer-gen/generators/packages.go
@@ -99,6 +99,13 @@ func packageForInternalInterfaces(base string) string {
 	return filepath.Join(base, "internalinterfaces")
 }
 
+func vendorless(p string) string {
+	if pos := strings.LastIndex(p, "/vendor/"); pos != -1 {
+		return p[pos+len("/vendor/"):]
+	}
+	return p
+}
+
 // Packages makes the client package definition.
 func Packages(context *generator.Context, arguments *args.GeneratorArgs) generator.Packages {
 	boilerplate, err := arguments.LoadGoBoilerplate()
@@ -122,7 +129,7 @@ func Packages(context *generator.Context, arguments *args.GeneratorArgs) generat
 	externalGroupVersions := make(map[string]clientgentypes.GroupVersions)
 	internalGroupVersions := make(map[string]clientgentypes.GroupVersions)
 	for _, inputDir := range arguments.InputDirs {
-		p := context.Universe.Package(inputDir)
+		p := context.Universe.Package(vendorless(inputDir))
 
 		objectMeta, internal, err := objectMetaForPackage(p)
 		if err != nil {