diff --git a/novelwriter/gui/doceditor.py b/novelwriter/gui/doceditor.py
index 87c9e7cc..361b236e 100644
--- a/novelwriter/gui/doceditor.py
+++ b/novelwriter/gui/doceditor.py
@@ -1856,11 +1856,17 @@ class GuiDocEditor(QTextEdit):
         posS = theCursor.selectionStart()
         theCursor.removeSelectedText()
         theCursor.setPosition(posS)
+
         if posS > 0 and hasText:
+            # If the block already had text, we must insert a new block
+            # first before we can add back the text to it.
             theCursor.insertBlock()
+
         theCursor.insertText(theText)
+
         if posO - cOffset >= 0:
             theCursor.setPosition(posO - cOffset)
+
         theCursor.endEditBlock()
         self.setTextCursor(theCursor)