diff --git a/schainpy/Graphics/SpectraPlot.py b/schainpy/Graphics/SpectraPlot.py
index 40cc3f7..a071e09 100644
--- a/schainpy/Graphics/SpectraPlot.py
+++ b/schainpy/Graphics/SpectraPlot.py
@@ -98,7 +98,7 @@ class Spectrum():
         
         plplot.plsstrm(self.indexPlot)
         plplot.plsetopt("geometry", "%dx%d" %(300*nx, 240*nx))
-        plplot.plsdev("xcairo")
+        plplot.plsdev("xwin")
         plplot.plscolbg(255,255,255)
         plplot.plscol0(1,0,0,0)
         plplot.plinit()
diff --git a/schainpy/Graphics/VoltagePlot.py b/schainpy/Graphics/VoltagePlot.py
index 08753e0..6cd4619 100644
--- a/schainpy/Graphics/VoltagePlot.py
+++ b/schainpy/Graphics/VoltagePlot.py
@@ -85,7 +85,7 @@ class Osciloscope():
         
         plplot.plsstrm(self.indexPlot)
         plplot.plsetopt("geometry", "%dx%d" %(700, 115*self.nGraphs))
-        plplot.plsdev("xcairo")
+        plplot.plsdev("xwin")
         plplot.plscolbg(255,255,255)
         plplot.plscol0(1,0,0,0)
         plplot.plinit()