diff --git a/src/plugins/texteditor/textdocumentlayout.cpp b/src/plugins/texteditor/textdocumentlayout.cpp
index 72241dd5a12..f82d9c446dd 100644
--- a/src/plugins/texteditor/textdocumentlayout.cpp
+++ b/src/plugins/texteditor/textdocumentlayout.cpp
@@ -659,6 +659,7 @@ void TextDocumentLayout::FoldValidator::process(QTextBlock block)
             && !TextDocumentLayout::canFold(previous))
             || (!TextDocumentLayout::isFolded(previous)
                 && TextDocumentLayout::canFold(previous)
+                && previous.isVisible()
                 && !block.isVisible())) {
         TextDocumentLayout::setFolded(previous, !TextDocumentLayout::isFolded(previous));
     }