diff --git a/lector/__main__.py b/lector/__main__.py
index c477db1..27eb191 100755
--- a/lector/__main__.py
+++ b/lector/__main__.py
@@ -275,6 +275,10 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
         self.ksCloseTab.setContext(QtCore.Qt.ApplicationShortcut)
         self.ksCloseTab.activated.connect(self.tab_close)
 
+        self.ksDeletePressed = QtWidgets.QShortcut(QtGui.QKeySequence('Delete'), self)
+        self.ksDeletePressed.setContext(QtCore.Qt.ApplicationShortcut)
+        self.ksDeletePressed.activated.connect(self.delete_pressed)
+
         self.listView.setFocus()
         self.open_books_at_startup()
 
@@ -451,11 +455,6 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
             return
 
     def add_books(self):
-        # TODO
-        # Remember file addition modality
-        # If a file is added from here, it should not be removed
-        # from the libary in case of a database refresh
-
         dialog_prompt = self._translate('Main_UI', 'Add books to database')
         ebooks_string = self._translate('Main_UI', 'eBooks')
         opened_files = QtWidgets.QFileDialog.getOpenFileNames(
@@ -540,6 +539,10 @@ class MainUI(QtWidgets.QMainWindow, mainwindow.Ui_MainWindow):
         confirm_deletion.show()
         confirm_deletion.exec_()
 
+    def delete_pressed(self):
+        if self.tabWidget.currentIndex() == 0:
+            self.delete_books()
+
     def move_on(self):
         self.settingsDialog.okButton.setEnabled(True)
         self.settingsDialog.okButton.setToolTip(
diff --git a/lector/library.py b/lector/library.py
index 6a832ca..58fb81b 100644
--- a/lector/library.py
+++ b/lector/library.py
@@ -296,8 +296,6 @@ class Library:
         # All files in unselected directories will have to be removed
         # from both of the models
         # They will also have to be deleted from the library
-        # valid_paths = set(valid_paths)
-
         invalid_paths = []
         deletable_persistent_indexes = []
 
@@ -306,7 +304,11 @@ class Library:
 
             item_metadata = item.data(QtCore.Qt.UserRole + 3)
             book_path = item_metadata['path']
-            addition_mode = item_metadata['addition_mode']
+            try:
+                addition_mode = item_metadata['addition_mode']
+            except KeyError:
+                addition_mode = 'automatic'
+                print('Libary: Error setting addition mode for prune')
 
             if (book_path not in valid_paths and
                     (addition_mode != 'manual' or addition_mode is None)):
diff --git a/lector/toolbars.py b/lector/toolbars.py
index 133c5e4..8df3512 100644
--- a/lector/toolbars.py
+++ b/lector/toolbars.py
@@ -439,17 +439,22 @@ class LibraryToolBar(QtWidgets.QToolBar):
 class FixedComboBox(QtWidgets.QComboBox):
     def __init__(self, parent=None):
         super(FixedComboBox, self).__init__(parent)
+        screen_width = QtWidgets.QDesktopWidget().screenGeometry().width()
+        self.adjusted_size = screen_width // 4.8
 
     def sizeHint(self):
-        return QtCore.QSize(400, 22)
+        # This and the one below should adjust to screen size
+        return QtCore.QSize(self.adjusted_size, 22)
 
 
 class FixedLineEdit(QtWidgets.QLineEdit):
     def __init__(self, parent=None):
         super(FixedLineEdit, self).__init__(parent)
+        screen_width = QtWidgets.QDesktopWidget().screenGeometry().width()
+        self.adjusted_size = screen_width // 4.8
 
     def sizeHint(self):
-        return QtCore.QSize(400, 22)
+        return QtCore.QSize(self.adjusted_size, 22)
 
     def keyReleaseEvent(self, event):
         if event.key() == QtCore.Qt.Key_Escape: