diff --git a/novelwriter/manuscript/buildsettings.py b/novelwriter/manuscript/buildsettings.py
index d60289ccc..ba7f3bfa9 100644
--- a/novelwriter/manuscript/buildsettings.py
+++ b/novelwriter/manuscript/buildsettings.py
@@ -138,6 +138,8 @@ SETTINGS_TEMPLATE: dict[str, tuple[type, T_BuildValue]] = {
     "doc.pageCountOffset":     (int, 0),
     "doc.metaLanguage":        (str, ""),
 
+    "epub.nestedToc":          (bool, False),
+
     "html.addStyles":          (bool, True),
     "html.preserveTabs":       (bool, False),
 }
@@ -213,6 +215,9 @@ SETTINGS_LABELS = {
     "doc.pageCountOffset":     QT_TRANSLATE_NOOP("Builds", "Page counter offset"),
     "doc.metaLanguage":        QT_TRANSLATE_NOOP("Builds", "Override document language"),
 
+    "epub":                    QT_TRANSLATE_NOOP("Builds", "EPUB Options"),
+    "epub.nestedToc":          QT_TRANSLATE_NOOP("Builds", "Nested table of contents"),
+
     "html":                    QT_TRANSLATE_NOOP("Builds", "HTML Options"),
     "html.addStyles":          QT_TRANSLATE_NOOP("Builds", "Add CSS styles"),
     "html.preserveTabs":       QT_TRANSLATE_NOOP("Builds", "Preserve tab characters"),
diff --git a/novelwriter/manuscript/manussettings.py b/novelwriter/manuscript/manussettings.py
index 291246a05..5caf79521 100644
--- a/novelwriter/manuscript/manussettings.py
+++ b/novelwriter/manuscript/manussettings.py
@@ -1524,6 +1524,18 @@ class _FormattingTab(NScrollableForm):
 
         self.addRow(self._build.getLabel("doc.metaLanguage"), [self.lblMetaLanguage, 8, self.metaLanguage])
 
+        # EPUB Document
+        # =============
+
+        title = self._build.getLabel("epub")
+        section += 1
+        self._sidebar.addButton(title, section)
+        self.addGroupLabel(title, section)
+
+        self.nestedToc = NSwitch(self, height=iPx)
+
+        self.addRow(self._build.getLabel("epub.nestedToc"), self.nestedToc)
+
         # HTML Document
         # =============
 
@@ -1597,8 +1609,6 @@ class _FormattingTab(NScrollableForm):
     def loadContent(self) -> None:
         """Populate the widgets."""
         # Text Content
-        # ============
-
         self.incBodyText.setChecked(self._build.getBool("text.includeBodyText"))
         self.incSynopsis.setChecked(self._build.getBool("text.includeSynopsis"))
         self.incComments.setChecked(self._build.getBool("text.includeComments"))
@@ -1610,8 +1620,6 @@ class _FormattingTab(NScrollableForm):
         self._updateIgnoredKeywords()
 
         # Text Format
-        # ===========
-
         font = QFont()
         font.fromString(self._build.getStr("format.textFont"))
         self._textFont = fontMatcher(font)
@@ -1629,23 +1637,17 @@ class _FormattingTab(NScrollableForm):
         self.showDialogue.setChecked(self._build.getBool("format.showDialogue"))
 
         # Heading Format
-        # ==============
-
         self.colorHeadings.setChecked(self._build.getBool("format.colorHeadings"))
         self.boldHeadings.setChecked(self._build.getBool("format.boldHeadings"))
         self.upperHeadings.setChecked(self._build.getBool("format.upperHeadings"))
         self.showStatus.setChecked(self._build.getBool("format.showStatus"))
 
         # First Line Indent
-        # =================
-
         self.firstIndent.setChecked(self._build.getBool("format.firstLineIndent"))
         self.indentWidth.setValue(self._build.getFloat("format.firstIndentWidth"))
         self.indentFirstPar.setChecked(self._build.getBool("format.indentFirstPar"))
 
         # Text Margins
-        # ============
-
         self.titleSize.setValue(self._build.getFloat("format.titleSize"))
         self.h1Size.setValue(self._build.getFloat("format.h1Size"))
         self.h2Size.setValue(self._build.getFloat("format.h2Size"))
@@ -1673,8 +1675,6 @@ class _FormattingTab(NScrollableForm):
         self._updateTextMarginState()
 
         # Page Layout
-        # ===========
-
         pageUnit = self._build.getStr("format.pageUnit")
         index = self.pageUnit.findData(pageUnit)
         if index >= 0:
@@ -1703,8 +1703,6 @@ class _FormattingTab(NScrollableForm):
         self.pageSize.currentIndexChanged.connect(self._changePageSize)
 
         # Document
-        # ========
-
         self.metaLanguage.setText(processLangCode(self._build.getStr("doc.metaLanguage")))
         self.pageHeader.setText(self._build.getStr("doc.pageHeader"))
         self.pageHeader.setCursorPosition(0)
@@ -1712,9 +1710,10 @@ class _FormattingTab(NScrollableForm):
         self.pageHeaderEven.setCursorPosition(0)
         self.pageCountOffset.setValue(self._build.getInt("doc.pageCountOffset"))
 
-        # HTML Document
-        # =============
+        # EPUB Document
+        self.nestedToc.setChecked(self._build.getBool("epub.nestedToc"))
 
+        # HTML Document
         self.htmlAddStyles.setChecked(self._build.getBool("html.addStyles"))
         self.htmlPreserveTabs.setChecked(self._build.getBool("html.preserveTabs"))
 
@@ -1801,6 +1800,9 @@ class _FormattingTab(NScrollableForm):
 
         self.metaLanguage.setText(metaLanguage)
 
+        # EPUB Document
+        self._build.setValue("epub.nestedToc", self.nestedToc.isChecked())
+
         # HTML Document
         self._build.setValue("html.addStyles", self.htmlAddStyles.isChecked())
         self._build.setValue("html.preserveTabs", self.htmlPreserveTabs.isChecked())