diff --git a/backend/smtc_unsupported.go b/backend/smtc_unsupported.go
index 6a19e8d7..18cf09e7 100644
--- a/backend/smtc_unsupported.go
+++ b/backend/smtc_unsupported.go
@@ -28,6 +28,14 @@ func InitSMTCForWindow(hwnd uintptr) (*SMTC, error) {
 	return nil, smtcUnsupportedErr
 }
 
+func (s *SMTC) SetEnabled(enabled bool) error {
+	return smtcUnsupportedErr
+}
+
+func (s *SMTC) SetThumbnail(filepath string) error {
+	return smtcUnsupportedErr
+}
+
 func (s *SMTC) OnButtonPressed(func(SMTCButton)) {}
 
 func (s *SMTC) OnSeek(f func(millis int)) {}