diff --git a/guilib/src/PreferencesDialog.cpp b/guilib/src/PreferencesDialog.cpp
index 75e19db4..09abbd74 100644
--- a/guilib/src/PreferencesDialog.cpp
+++ b/guilib/src/PreferencesDialog.cpp
@@ -164,9 +164,6 @@ PreferencesDialog::PreferencesDialog(QWidget * parent) :
 		_ui->reextract_type->setItemData(0, 0, Qt::UserRole - 1);
 		_ui->reextract_type->setItemData(1, 0, Qt::UserRole - 1);
 
-		_ui->comboBox_dictionary_strategy->setItemData(1, 0, Qt::UserRole - 1);
-		_ui->reextract_nn->setItemData(1, 0, Qt::UserRole - 1);
-
 #if CV_MAJOR_VERSION == 3
 		_ui->comboBox_detector_strategy->setItemData(0, 0, Qt::UserRole - 1);
 		_ui->comboBox_detector_strategy->setItemData(1, 0, Qt::UserRole - 1);