diff --git a/src/frontends/qt4/GuiPainter.cpp b/src/frontends/qt4/GuiPainter.cpp
index 9204c73348..b67441b9b1 100644
--- a/src/frontends/qt4/GuiPainter.cpp
+++ b/src/frontends/qt4/GuiPainter.cpp
@@ -46,7 +46,7 @@ using namespace lyx::support;
 namespace lyx {
 namespace frontend {
 
-const int Painter::thin_line = 0;
+const int Painter::thin_line = 1;
 
 GuiPainter::GuiPainter(QPaintDevice * device, double pixel_ratio)
 	: QPainter(device), Painter(pixel_ratio),