diff --git a/src/core/feedsmodelstandardcategory.cpp b/src/core/feedsmodelstandardcategory.cpp
index 8287b44b0..4ef2d50ba 100644
--- a/src/core/feedsmodelstandardcategory.cpp
+++ b/src/core/feedsmodelstandardcategory.cpp
@@ -17,6 +17,21 @@ FeedsModelStandardCategory::~FeedsModelStandardCategory() {
 
 QVariant FeedsModelStandardCategory::data(int column, int role) const {
   switch (role) {
+    case Qt::ToolTipRole:
+      if (column == FDS_MODEL_TITLE_INDEX) {
+        return QObject::tr("%1\n\n"
+                           "Category type: standard\n"
+                           "Creation date: %2").arg(m_title,
+                                                      m_creationDate.toString(Qt::DefaultLocaleShortDate));
+      }
+      else if (column == FDS_MODEL_COUNTS_INDEX) {
+        // TODO: tady dat plural a singular
+        return QObject::tr("%1 unread messages.").arg(countOfUnreadMessages());
+      }
+      else {
+        return QVariant();
+      }
+
     case Qt::DisplayRole:
       if (column == FDS_MODEL_TITLE_INDEX) {
         return QString("%1%2").arg(m_title, "-C");
@@ -24,6 +39,9 @@ QVariant FeedsModelStandardCategory::data(int column, int role) const {
       else if (column == FDS_MODEL_COUNTS_INDEX) {
         return QString("(%1)").arg(QString::number(countOfUnreadMessages()));
       }
+      else {
+        return QVariant();
+      }
 
     case Qt::DecorationRole:
       return column == FDS_MODEL_TITLE_INDEX ?
diff --git a/src/core/feedsmodelstandardcategory.h b/src/core/feedsmodelstandardcategory.h
index 112236fef..63d4df3aa 100644
--- a/src/core/feedsmodelstandardcategory.h
+++ b/src/core/feedsmodelstandardcategory.h
@@ -18,10 +18,11 @@ class FeedsModelStandardCategory : public FeedsModelCategory {
     explicit FeedsModelStandardCategory(FeedsModelRootItem *parent_item = NULL);
     virtual ~FeedsModelStandardCategory();
 
-    void update();
-
     QVariant data(int column, int role) const;
 
+    // Performs update on all children of this category.
+    void update();
+
     static FeedsModelStandardCategory *loadFromRecord(const QSqlRecord &record);
 };