diff --git a/sources/qetgraphicsitem/qetshapeitem.cpp b/sources/qetgraphicsitem/qetshapeitem.cpp
index bcd8b8a1a..6769e3712 100644
--- a/sources/qetgraphicsitem/qetshapeitem.cpp
+++ b/sources/qetgraphicsitem/qetshapeitem.cpp
@@ -459,7 +459,7 @@ bool QetShapeItem::fromXml(const QDomElement &e)
 
 	is_movable_ = (e.attribute("is_movable").toInt());
 	m_pen.setStyle(Qt::PenStyle(e.attribute("style","0").toInt()));
-	m_pen.setWidthF(e.attribute("shape_size", QString::number(shape_size)).toInt());
+	m_pen.setWidthF(e.attribute("shape_size", QString::number(shape_size)).toDouble());
 
 	QString type = e.attribute("type");
 		//Compatibility for version older than N°4075, shape type was stored with an int
diff --git a/sources/qetgraphicsitem/qetshapeitem.h b/sources/qetgraphicsitem/qetshapeitem.h
index 9a4a81322..1638833bb 100644
--- a/sources/qetgraphicsitem/qetshapeitem.h
+++ b/sources/qetgraphicsitem/qetshapeitem.h
@@ -103,7 +103,7 @@ class QetShapeItem : public QetGraphicsItem
 		bool		 m_hovered,
 					 m_mouse_grab_handler;
 		int			 m_vector_index;
-		int			 shape_size;
+		double		 shape_size;
 		QetGraphicsHandlerUtility m_handler;
 };
 #endif // QETSHAPEITEM_H
diff --git a/sources/ui/shapegraphicsitempropertieswidget.cpp b/sources/ui/shapegraphicsitempropertieswidget.cpp
index 3ff6eb635..a56713cd2 100644
--- a/sources/ui/shapegraphicsitempropertieswidget.cpp
+++ b/sources/ui/shapegraphicsitempropertieswidget.cpp
@@ -134,10 +134,10 @@ bool ShapeGraphicsItemPropertiesWidget::setLiveEdit(bool live_edit)
 
 	if (m_live_edit){
 		connect (ui->m_style_cb, SIGNAL(activated(int)), this, SLOT(apply()));
-		connect (ui->m_size_cb, SIGNAL(valueChanged(int)), this, SLOT(apply()));
+		connect (ui->m_size_cb, SIGNAL(valueChanged(double)), this, SLOT(apply()));
 	}else
 		disconnect (ui->m_style_cb, SIGNAL(activated(int)), this, SLOT(apply()));
-		disconnect (ui->m_size_cb, SIGNAL(valueChanged(int)), this, SLOT(apply()));
+		disconnect (ui->m_size_cb, SIGNAL(valueChanged(double)), this, SLOT(apply()));
 	return true;
 }
 
diff --git a/sources/ui/shapegraphicsitempropertieswidget.ui b/sources/ui/shapegraphicsitempropertieswidget.ui
index e745c2ecb..72cda72a0 100644
--- a/sources/ui/shapegraphicsitempropertieswidget.ui
+++ b/sources/ui/shapegraphicsitempropertieswidget.ui
@@ -61,19 +61,28 @@
      </property>
     </widget>
    </item>
-   <item>
-    <widget class="QSpinBox" name="m_size_cb">
+   <item alignment="Qt::AlignRight">
+    <widget class="QDoubleSpinBox" name="m_size_cb">
+     <property name="maximumSize">
+      <size>
+       <width>16777212</width>
+       <height>16777215</height>
+      </size>
+     </property>
      <property name="correctionMode">
       <enum>QAbstractSpinBox::CorrectToNearestValue</enum>
      </property>
      <property name="minimum">
-      <number>1</number>
+      <double>0.400000000000000</double>
      </property>
      <property name="maximum">
-      <number>20</number>
+      <double>50.000000000000000</double>
+     </property>
+     <property name="singleStep">
+      <double>0.200000000000000</double>
      </property>
      <property name="value">
-      <number>1</number>
+      <double>1.000000000000000</double>
      </property>
     </widget>
    </item>