diff --git a/src/librssguard/services/abstract/category.cpp b/src/librssguard/services/abstract/category.cpp
index 2ec1df873..6da2bed93 100644
--- a/src/librssguard/services/abstract/category.cpp
+++ b/src/librssguard/services/abstract/category.cpp
@@ -68,3 +68,9 @@ bool Category::markAsReadUnread(RootItem::ReadStatus status) {
 
   return service->markFeedsReadUnread(getSubTreeFeeds(), status);
 }
+
+QString Category::additionalTooltip() const {
+  return tr("Number of feeds: %1\n"
+            "Number of categories: %2")
+    .arg(QString::number(getSubTreeFeeds().size()), QString::number(getSubTreeCategories().size() - 1));
+}
diff --git a/src/librssguard/services/abstract/category.h b/src/librssguard/services/abstract/category.h
index 7376d540a..82323a5bc 100644
--- a/src/librssguard/services/abstract/category.h
+++ b/src/librssguard/services/abstract/category.h
@@ -6,7 +6,7 @@
 #include "services/abstract/rootitem.h"
 
 class Category : public RootItem {
-  Q_OBJECT
+    Q_OBJECT
 
   public:
     explicit Category(RootItem* parent = nullptr);
@@ -15,6 +15,7 @@ class Category : public RootItem {
     virtual void updateCounts(bool including_total_count);
     virtual bool cleanMessages(bool clean_read_only);
     virtual bool markAsReadUnread(ReadStatus status);
+    virtual QString additionalTooltip() const;
 };
 
 #endif // CATEGORY_H