diff --git a/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rtextarea/ConfigurableCaret.java b/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rtextarea/ConfigurableCaret.java
index 47c4d35015..5d1ecd1169 100644
--- a/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rtextarea/ConfigurableCaret.java
+++ b/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rtextarea/ConfigurableCaret.java
@@ -12,6 +12,7 @@ import java.awt.*;
 import java.awt.event.*;
 import java.awt.datatransfer.*;
 import java.awt.event.ActionEvent;
+import java.awt.geom.Line2D;
 import java.io.*;
 import javax.swing.*;
 import javax.swing.plaf.*;
@@ -454,9 +455,9 @@ public class ConfigurableCaret extends DefaultCaret {
 
 					// A thicker vertical line.
 					case THICK_VERTICAL_LINE_STYLE:
-						g.drawLine(r.x,r.y, r.x,r.y+r.height);
-						r.x++;
-						g.drawLine(r.x,r.y, r.x,r.y+r.height);
+						Graphics2D g2 = (Graphics2D) g;
+						g2.setStroke(new BasicStroke(2));
+						g2.draw(new Line2D.Float(r.x, r.y, r.x, r.y + r.height));
 						break;
 
 				} // End of switch (style).