From 23e9e523e36705fd2562c300e4fc7bc73f7ac8c5 Mon Sep 17 00:00:00 2001
From: Christoph <cschwentker@gmail.com>
Date: Tue, 23 Apr 2019 18:49:11 +0200
Subject: [PATCH] Quick fix for error when opening preferences (#4917)

---
 src/main/java/org/jabref/gui/preferences/TableColumnsTab.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/org/jabref/gui/preferences/TableColumnsTab.java b/src/main/java/org/jabref/gui/preferences/TableColumnsTab.java
index 18049b23385..7f5d8ba1198 100644
--- a/src/main/java/org/jabref/gui/preferences/TableColumnsTab.java
+++ b/src/main/java/org/jabref/gui/preferences/TableColumnsTab.java
@@ -316,6 +316,9 @@ public void setValues() {
         if (extraFileColumns.isSelected()) {
             List<String> desiredColumns = prefs.getStringList(JabRefPreferences.LIST_OF_FILE_COLUMNS);
             int listSize = listOfFileColumns.getSelectionModel().getSelectedIndex();
+            if (listSize < 0) {
+                listSize = 0;
+            }
             int[] indicesToSelect = new int[listSize];
             for (int i = 0; i < listSize; i++) {
                 indicesToSelect[i] = listSize + 1;