diff --git a/sources/qetgraphicsitem/conductor.cpp b/sources/qetgraphicsitem/conductor.cpp
index 4eb9009bc..a82dc5ced 100644
--- a/sources/qetgraphicsitem/conductor.cpp
+++ b/sources/qetgraphicsitem/conductor.cpp
@@ -1099,8 +1099,10 @@ bool Conductor::fromXml(QDomElement &dom_element)
 		m_uuid = QUuid::createUuid();
 	}
 
-	setPos(dom_element.attribute("x", nullptr).toDouble(),
-		   dom_element.attribute("y", nullptr).toDouble());
+		//"nan" and "inf" parse as numbers; a non-finite position is kept at 0
+	const qreal x = dom_element.attribute("x", nullptr).toDouble();
+	const qreal y = dom_element.attribute("y", nullptr).toDouble();
+	setPos(qIsFinite(x) ? x : 0, qIsFinite(y) ? y : 0);
 
 	bool retval = pathFromXml(dom_element);
 
@@ -1229,7 +1231,10 @@ bool Conductor::pathFromXml(const QDomElement &e) {
 		// cette longueur doit etre un reel
 		bool ok;
 		qreal segment_length = current_segment.attribute("length").toDouble(&ok);
-		if (!ok) continue;
+			// toDouble() accepts "nan" and "inf". A NaN length would also pass
+			// the coherence check below (every comparison with NaN is false)
+			// and turn the whole path into NaN.
+		if (!ok || !qIsFinite(segment_length)) continue;
 
 		if (current_segment.attribute("orientation") == "horizontal") {
 			segments_x << segment_length;
diff --git a/sources/qetgraphicsitem/conductortextitem.cpp b/sources/qetgraphicsitem/conductortextitem.cpp
index 624b5ea77..a3e3127f0 100644
--- a/sources/qetgraphicsitem/conductortextitem.cpp
+++ b/sources/qetgraphicsitem/conductortextitem.cpp
@@ -69,13 +69,17 @@ Conductor *ConductorTextItem::parentConductor() const
 	@param e
 */
 void ConductorTextItem::fromXml(const QDomElement &e) {
-	if (e.hasAttribute("userx")) {
-		setPos(e.attribute("userx").toDouble(),
-			   e.attribute("usery").toDouble());
+		//A non-finite ("nan", "inf") position or rotation is ignored,
+		//as if the text had never been moved or rotated
+	const qreal x = e.attribute("userx").toDouble();
+	const qreal y = e.attribute("usery").toDouble();
+	if (e.hasAttribute("userx") && qIsFinite(x) && qIsFinite(y)) {
+		setPos(x, y);
 		moved_by_user_ = true;
 	}
-	if (e.hasAttribute("rotation")) {
-		setRotation(e.attribute("rotation").toDouble());
+	const qreal rotation = e.attribute("rotation").toDouble();
+	if (e.hasAttribute("rotation") && qIsFinite(rotation)) {
+		setRotation(rotation);
 		rotate_by_user_ = true;
 	}
 }