diff --git a/sources/editor/graphicspart/partdynamictextfield.cpp b/sources/editor/graphicspart/partdynamictextfield.cpp
index 49b65c678..7956c1d68 100644
--- a/sources/editor/graphicspart/partdynamictextfield.cpp
+++ b/sources/editor/graphicspart/partdynamictextfield.cpp
@@ -351,8 +351,11 @@ QColor PartDynamicTextField::color() const {
  * @brief PartDynamicTextField::setFontSize
  * @param s
  */
-void PartDynamicTextField::setFontSize(int s) {
+void PartDynamicTextField::setFontSize(int s)
+{
+	prepareAlignment();
 	setFont(QETApp::diagramTextsFont(s));
+	finishAlignment();
 	emit fontSizeChanged(s);
 }
 
diff --git a/sources/qetgraphicsitem/diagramtextitem.cpp b/sources/qetgraphicsitem/diagramtextitem.cpp
index 1192fd7d8..584b0f205 100644
--- a/sources/qetgraphicsitem/diagramtextitem.cpp
+++ b/sources/qetgraphicsitem/diagramtextitem.cpp
@@ -152,7 +152,9 @@ QPointF DiagramTextItem::mapMovementFromParent(const QPointF &movement) const {
 
 void DiagramTextItem::setFontSize(int s)
 {
+	prepareAlignment();
     setFont(QETApp::diagramTextsFont(s));
+	finishAlignment();
 	emit fontSizeChanged(s);
 }