diff --git a/cli/options.go b/cli/options.go
index b2ab60e8..caa07666 100644
--- a/cli/options.go
+++ b/cli/options.go
@@ -414,7 +414,7 @@ func (o *ProjectOptions) ReadConfigFiles(ctx context.Context, workingDir string,
 	for i, c := range config.ConfigFiles {
 		var err error
 		var b []byte
-		if c.Filename == "-" {
+		if c.IsStdin() {
 			b, err = io.ReadAll(os.Stdin)
 			if err != nil {
 				return nil, err
diff --git a/types/config.go b/types/config.go
index a2382fb3..d73d2b9f 100644
--- a/types/config.go
+++ b/types/config.go
@@ -67,6 +67,10 @@ type ConfigFile struct {
 	Config map[string]interface{}
 }
 
+func (cf ConfigFile) IsStdin() bool {
+	return cf.Filename == "-"
+}
+
 func ToConfigFiles(path []string) (f []ConfigFile) {
 	for _, p := range path {
 		f = append(f, ConfigFile{Filename: p})