diff --git a/invesalius/data/surface.py b/invesalius/data/surface.py
index da5b5d2..91fa2cd 100644
--- a/invesalius/data/surface.py
+++ b/invesalius/data/surface.py
@@ -847,12 +847,13 @@ class SurfaceManager():
             #    writer = vtk.vtkIVWriter()
             elif filetype == const.FILETYPE_PLY:
                 writer = vtk.vtkPLYWriter()
-                writer.SetFileTypeToBinary()
-                writer.SetDataByteOrderToLittleEndian()
+                writer.SetFileTypeToASCII()
+                writer.SetColorModeToOff()
+                #writer.SetDataByteOrderToLittleEndian()
                 #writer.SetColorModeToUniformCellColor()
                 #writer.SetColor(255, 0, 0)
 
-            if filetype == const.FILETYPE_STL:
+            if filetype in (const.FILETYPE_STL, const.FILETYPE_PLY):
                 # Invert normals
                 normals = vtk.vtkPolyDataNormals()
                 normals.SetInput(polydata)
--
libgit2 0.21.2