diff --git a/cockatrice/src/carddatabasemodel.cpp b/cockatrice/src/carddatabasemodel.cpp
index 2c6d658b..341542df 100644
--- a/cockatrice/src/carddatabasemodel.cpp
+++ b/cockatrice/src/carddatabasemodel.cpp
@@ -1,6 +1,8 @@
 #include "carddatabasemodel.h"
 #include "filtertree.h"
 
+#define CARDDBMODEL_COLUMNS 5
+
 CardDatabaseModel::CardDatabaseModel(CardDatabase *_db, QObject *parent)
     : QAbstractListModel(parent), db(_db)
 {
@@ -21,31 +23,31 @@ int CardDatabaseModel::rowCount(const QModelIndex &/*parent*/) const
 
 int CardDatabaseModel::columnCount(const QModelIndex &/*parent*/) const
 {
-    return 5;
+    return CARDDBMODEL_COLUMNS;
 }
 
 QVariant CardDatabaseModel::data(const QModelIndex &index, int role) const
 {
     if (!index.isValid())
         return QVariant();
-    if ((index.row() >= cardList.size()) || (index.column() >= 5))
+    if ((index.row() >= cardList.size()) || (index.column() >= CARDDBMODEL_COLUMNS))
         return QVariant();
     if (role != Qt::DisplayRole)
         return QVariant();
 
     CardInfo *card = cardList.at(index.row());
     switch (index.column()){
-        case 0: return card->getName();
-        case 1: {
+        case NameColumn: return card->getName();
+        case SetListColumn: {
             QStringList setList;
             const QList<CardSet *> &sets = card->getSets();
             for (int i = 0; i < sets.size(); i++)
                 setList << sets[i]->getShortName();
             return setList.join(", ");
         }
-        case 2: return card->getManaCost();
-        case 3: return card->getCardType();
-        case 4: return card->getPowTough();
+        case ManaCostColumn: return card->getManaCost();
+        case CardTypeColumn: return card->getCardType();
+        case PTColumn: return card->getPowTough();
         default: return QVariant();
     }
 }
@@ -57,11 +59,11 @@ QVariant CardDatabaseModel::headerData(int section, Qt::Orientation orientation,
     if (orientation != Qt::Horizontal)
         return QVariant();
     switch (section) {
-        case 0: return QString(tr("Name"));
-        case 1: return QString(tr("Sets"));
-        case 2: return QString(tr("Mana cost"));
-        case 3: return QString(tr("Card type"));
-        case 4: return QString(tr("P/T"));
+        case NameColumn: return QString(tr("Name"));
+        case SetListColumn: return QString(tr("Sets"));
+        case ManaCostColumn: return QString(tr("Mana cost"));
+        case CardTypeColumn: return QString(tr("Card type"));
+        case PTColumn: return QString(tr("P/T"));
         default: return QVariant();
     }
 }
@@ -86,7 +88,7 @@ void CardDatabaseModel::cardInfoChanged(CardInfo *card)
     if (row == -1)
         return;
     
-    emit dataChanged(index(row, 0), index(row, 4));
+    emit dataChanged(index(row, 0), index(row, CARDDBMODEL_COLUMNS - 1));
 }
 
 void CardDatabaseModel::cardAdded(CardInfo *card)
diff --git a/cockatrice/src/carddatabasemodel.h b/cockatrice/src/carddatabasemodel.h
index 91a01e8c..30d3b3a5 100644
--- a/cockatrice/src/carddatabasemodel.h
+++ b/cockatrice/src/carddatabasemodel.h
@@ -12,6 +12,7 @@ class FilterTree;
 class CardDatabaseModel : public QAbstractListModel {
     Q_OBJECT
 public:
+    enum Columns { NameColumn, SetListColumn, ManaCostColumn, CardTypeColumn, PTColumn, CMCColumn };
     CardDatabaseModel(CardDatabase *_db, QObject *parent = 0);
     ~CardDatabaseModel();
     int rowCount(const QModelIndex &parent = QModelIndex()) const;