diff --git a/app/core.cpp b/app/core.cpp
index a665099c9..8b9859c9b 100644
--- a/app/core.cpp
+++ b/app/core.cpp
@@ -383,7 +383,7 @@ void Core::DialogExportShow()
 }
 
 #ifdef USE_OTIO
-void Core::DialogImportOTIOShow(QList<Sequence*> sequences) {
+void Core::DialogImportOTIOShow(const QList<Sequence*>& sequences) {
   Project* active_project = GetActiveProject();
   OTIOPropertiesDialog opd(sequences, active_project);
   opd.exec();
diff --git a/app/core.h b/app/core.h
index 99018f377..5b439a8f0 100644
--- a/app/core.h
+++ b/app/core.h
@@ -402,7 +402,7 @@ public slots:
    * @brief Show OTIO import dialog
    */
 #ifdef USE_OTIO
-  void DialogImportOTIOShow(QList<Sequence*> sequences);
+  void DialogImportOTIOShow(const QList<Sequence*>& sequences);
 #endif
 
   /**
diff --git a/app/dialog/otioproperties/otiopropertiesdialog.cpp b/app/dialog/otioproperties/otiopropertiesdialog.cpp
index 72797a9fa..9c5794a02 100644
--- a/app/dialog/otioproperties/otiopropertiesdialog.cpp
+++ b/app/dialog/otioproperties/otiopropertiesdialog.cpp
@@ -27,13 +27,14 @@
 
 namespace olive {
 
-OTIOPropertiesDialog::OTIOPropertiesDialog(QList<Sequence*> sequences, Project* active_project, QWidget* parent) :
+OTIOPropertiesDialog::OTIOPropertiesDialog(const QList<Sequence*>& sequences, Project* active_project, QWidget* parent)
+    :
     QDialog(parent),
     sequences_(sequences)
 {
   QVBoxLayout* layout = new QVBoxLayout(this);
 
-  layout->addWidget(new QLabel("Change settings for each OTIO sequence to be loaded"));
+  layout->addWidget(new QLabel(tr("Change settings for each OTIO sequence to be loaded")));
 
   table_ = new QTreeWidget();
   table_->setColumnCount(2);
diff --git a/app/dialog/otioproperties/otiopropertiesdialog.h b/app/dialog/otioproperties/otiopropertiesdialog.h
index 541e016b9..ad66bbd9f 100644
--- a/app/dialog/otioproperties/otiopropertiesdialog.h
+++ b/app/dialog/otioproperties/otiopropertiesdialog.h
@@ -20,12 +20,12 @@ namespace olive {
   class OTIOPropertiesDialog : public QDialog {
     Q_OBJECT
    public:
-    OTIOPropertiesDialog(QList<Sequence*> sequences, Project* active_project, QWidget* parent = nullptr);
+    OTIOPropertiesDialog(const QList<Sequence*>& sequences, Project* active_project, QWidget* parent = nullptr);
 
    private:
     QTreeWidget* table_;
 
-    QList<Sequence*> sequences_;
+    const QList<Sequence*> sequences_;
 
    private slots:
     /**