diff --git a/src/3rdparty/qrcode/QrCode.cpp b/src/3rdparty/qrcode/QrCode.cpp
index d394a81..0a8b12f 100644
--- a/src/3rdparty/qrcode/QrCode.cpp
+++ b/src/3rdparty/qrcode/QrCode.cpp
@@ -166,7 +166,7 @@ bool QrCode::getModule(int x, int y) const {
 }
 
 
-QString QrCode::toSvgString(int border) const {
+std::string QrCode::toSvgString(int border) const {
 	if (border < 0)
 		throw std::domain_error("Border must be non-negative");
 	if (border > INT_MAX / 2 || border * 2 > INT_MAX - size)
@@ -190,7 +190,7 @@ QString QrCode::toSvgString(int border) const {
 	}
 	sb << "\" fill=\"#000000\"/>\n";
 	sb << "</svg>\n";
-	return QString::fromStdString(sb.str());
+	return sb.str();
 }
 
 
diff --git a/src/3rdparty/qrcode/QrCode.hpp b/src/3rdparty/qrcode/QrCode.hpp
index 9aec236..1904844 100644
--- a/src/3rdparty/qrcode/QrCode.hpp
+++ b/src/3rdparty/qrcode/QrCode.hpp
@@ -187,7 +187,7 @@ class QrCode final {
 	 * Returns a string of SVG code for an image depicting this QR Code, with the given number
 	 * of border modules. The string always uses Unix newlines (\n), regardless of the platform.
 	 */
-	public: QString toSvgString(int border) const;
+	public: std::string toSvgString(int border) const;