diff --git a/CHANGELOG.md b/CHANGELOG.md
index add85f89..5a0fd211 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -42,6 +42,7 @@
 - Bugfix: Added `desktop-entry` hint to Linux notifications. (#6615)
 - Bugfix: Fixed <kbd>CMD</kbd> + <kbd>DELETE</kbd> behavior in the user notes editing dialog for macOS. (#6676)
 - Bugfix: Fixed a potential crash when closing Chatterino with a slow network connection. (#6645)
+- Bugfix: Disable "Sort Tabs Alphabetically" action when notebook layout is locked. (#6710)
 - Dev: Update release documentation. (#6498)
 - Dev: Make code sanitizers opt in with the `CHATTERINO_SANITIZER_SUPPORT` CMake option. After that's enabled, use the `SANITIZE_*` flag to enable individual sanitizers. (#6493)
 - Dev: Remove unused QTextCodec includes. (#6487)
diff --git a/src/widgets/Notebook.cpp b/src/widgets/Notebook.cpp
index 0edcf6d9..f33084db 100644
--- a/src/widgets/Notebook.cpp
+++ b/src/widgets/Notebook.cpp
@@ -1247,6 +1247,8 @@ bool Notebook::shouldShowTab(const NotebookTab *tab) const
 
 void Notebook::sortTabsAlphabetically()
 {
+    assert(!this->isNotebookLayoutLocked() &&
+           "sortTabsAlphabetically called while notebook layout is locked");
     std::ranges::sort(this->items_, [](const Item &a, const Item &b) {
         const QString &lhs = a.tab->getTitle();
         const QString &rhs = b.tab->getTitle();
@@ -1320,6 +1322,10 @@ SplitNotebook::SplitNotebook(Window *parent)
 
     this->sortTabsAlphabeticallyAction_ =
         new QAction("Sort Tabs Alphabetically", this);
+    if (this->isNotebookLayoutLocked())
+    {
+        this->sortTabsAlphabeticallyAction_->setEnabled(false);
+    }
     QObject::connect(this->sortTabsAlphabeticallyAction_, &QAction::triggered,
                      [this] {
                          this->sortTabsAlphabetically();
@@ -1632,4 +1638,10 @@ void SplitNotebook::forEachSplit(const std::function<void(Split *)> &cb)
     }
 }
 
+void SplitNotebook::setLockNotebookLayout(bool value)
+{
+    Notebook::setLockNotebookLayout(value);
+    this->sortTabsAlphabeticallyAction_->setEnabled(!value);
+}
+
 }  // namespace chatterino
diff --git a/src/widgets/Notebook.hpp b/src/widgets/Notebook.hpp
index 01e158ba..8f020641 100644
--- a/src/widgets/Notebook.hpp
+++ b/src/widgets/Notebook.hpp
@@ -115,15 +115,13 @@ public:
     void setTabLocation(NotebookTabLocation location);
 
     bool isNotebookLayoutLocked() const;
-    void setLockNotebookLayout(bool value);
+    virtual void setLockNotebookLayout(bool value);
 
     virtual void addNotebookActionsToMenu(QMenu *menu);
 
     // Update layout and tab visibility
     void refresh();
 
-    void sortTabsAlphabetically();
-
 protected:
     bool getShowTabs() const;
     void setShowTabs(bool value);
@@ -171,6 +169,8 @@ protected:
 
     void performLayout(bool animate = false);
 
+    void sortTabsAlphabetically();
+
 private:
     struct LayoutContext {
         int left = 0;
@@ -275,6 +275,8 @@ private:
     // Main window on Windows has basically a duplicate of this in Window
     PixmapButton *streamerModeIcon_{};
     void updateStreamerModeIcon();
+
+    void setLockNotebookLayout(bool value) override;
 };
 
 }  // namespace chatterino