diff --git a/src/blackmisc/statusmessage.h b/src/blackmisc/statusmessage.h
index 4df907ab6..23939bce2 100644
--- a/src/blackmisc/statusmessage.h
+++ b/src/blackmisc/statusmessage.h
@@ -105,6 +105,12 @@ namespace BlackMisc
         //! Severity
         void setSeverity(StatusSeverity severity) { this->m_severity = severity; }
 
+        //! Add category
+        void addCategory(const CLogCategory &category) { this->m_categories.push_back(category); }
+
+        //! Add categories
+        void addCategories(const CLogCategoryList &categories) { this->m_categories.push_back(categories); }
+
         //! Representing icon
         virtual CIcon toIcon() const override { return convertToIcon(*this); }
 
diff --git a/src/blackmisc/statusmessagelist.cpp b/src/blackmisc/statusmessagelist.cpp
index 43d00f665..7c85e79ff 100644
--- a/src/blackmisc/statusmessagelist.cpp
+++ b/src/blackmisc/statusmessagelist.cpp
@@ -35,6 +35,28 @@ namespace BlackMisc
         return this->findBy(&CStatusMessage::getSeverity, severity);
     }
 
+    /*
+     * Add category
+     */
+    void CStatusMessageList::addCategory(const CLogCategory &category)
+    {
+        for (auto &msg : *this)
+        {
+            msg.addCategory(category);
+        }
+    }
+
+    /*
+     * Add categories
+     */
+    void CStatusMessageList::addCategories(const CLogCategoryList &categories)
+    {
+        for (auto &msg : *this)
+        {
+            msg.addCategories(categories);
+        }
+    }
+
     /*
      * Metadata
      */
diff --git a/src/blackmisc/statusmessagelist.h b/src/blackmisc/statusmessagelist.h
index e3933a2e6..06695614c 100644
--- a/src/blackmisc/statusmessagelist.h
+++ b/src/blackmisc/statusmessagelist.h
@@ -38,6 +38,12 @@ namespace BlackMisc
         //! Find by severity
         CStatusMessageList findBySeverity(CStatusMessage::StatusSeverity severity) const;
 
+        //! Add a category to all messages in the list
+        void addCategory(const CLogCategory &category);
+
+        //! Add some categories to all messages in the list
+        void addCategories(const CLogCategoryList &categories);
+
         //! \copydoc CValueObject::toQVariant
         virtual QVariant toQVariant() const override { return QVariant::fromValue(*this); }