diff --git a/examples/xlsx/richtext/main.cpp b/examples/xlsx/richtext/main.cpp
index 9e23025..74e9541 100644
--- a/examples/xlsx/richtext/main.cpp
+++ b/examples/xlsx/richtext/main.cpp
@@ -27,6 +27,9 @@ int main()
 
     xlsx.workbook()->setHtmlToRichStringEnabled(true);
     xlsx.write("B4", "<b>Hello</b> <font color=\"red\">Qt</font> <i>Xlsx</i>");
+
+    xlsx.write("B6", "<font color=\"red\"><b><u><i>Qt Xlsx</i></u></b></font>");
+
     //![1]
 
     //![2]
diff --git a/src/xlsx/xlsxworksheet.cpp b/src/xlsx/xlsxworksheet.cpp
index 5087ac6..583d819 100755
--- a/src/xlsx/xlsxworksheet.cpp
+++ b/src/xlsx/xlsxworksheet.cpp
@@ -621,6 +621,8 @@ int Worksheet::writeString(int row, int column, const RichString &value, const F
 
     d->sharedStrings()->addSharedString(value);
     Format fmt = format.isValid() ? format : d->cellFormat(row, column);
+    if (value.fragmentCount() == 1 && value.fragmentFormat(0).isValid())
+        fmt.mergeFormat(value.fragmentFormat(0));
     d->workbook->styles()->addXfFormat(fmt);
     QSharedPointer<Cell> cell = QSharedPointer<Cell>(new Cell(value.toPlainString(), Cell::String, fmt, this));
     cell->d_ptr->richString = value;