diff --git a/source/svgelement.cpp b/source/svgelement.cpp
index d3d9f72..acb3e62 100644
--- a/source/svgelement.cpp
+++ b/source/svgelement.cpp
@@ -53,6 +53,12 @@ SVGTextNode::SVGTextNode(Document* document)
 {
 }
 
+void SVGTextNode::setData(const std::string& data)
+{
+    rootElement()->setNeedsLayout();
+    m_data.assign(data);
+}
+
 std::unique_ptr<SVGNode> SVGTextNode::clone(bool deep) const
 {
     auto node = std::make_unique<SVGTextNode>(document());
diff --git a/source/svgelement.h b/source/svgelement.h
index f9421a8..ce04837 100644
--- a/source/svgelement.h
+++ b/source/svgelement.h
@@ -50,8 +50,8 @@ class SVGTextNode final : public SVGNode {
 
     bool isTextNode() const final { return true; }
 
-    void setData(const std::string& data) { m_data = data; }
     const std::string& data() const { return m_data; }
+    void setData(const std::string& data);
 
     std::unique_ptr<SVGNode> clone(bool deep) const final;