diff --git a/source/SharpGL/Core/SharpGL.Serialization/Wavefront/ObjFileFormat.cs b/source/SharpGL/Core/SharpGL.Serialization/Wavefront/ObjFileFormat.cs
index 740c8f6c..bf952b03 100644
--- a/source/SharpGL/Core/SharpGL.Serialization/Wavefront/ObjFileFormat.cs
+++ b/source/SharpGL/Core/SharpGL.Serialization/Wavefront/ObjFileFormat.cs
@@ -101,9 +101,10 @@ private void LoadMaterials(string path, Scene scene)
                             mtl.Diffuse = ReadMaterialColor(line, alpha);
                         else if (line.StartsWith("Ks"))
                             mtl.Specular = ReadMaterialColor(line, alpha);
-                        else if (line.StartsWith("Ns"))
+                        else if (line.StartsWith("Ns")) {
+                            line = line.Replace(".", ",");
                             mtl.Shininess = Convert.ToSingle(ReadMaterialValue(line));
-                        else if (line.StartsWith("map_Ka") ||
+                        } else if (line.StartsWith("map_Ka") ||
                             line.StartsWith("map_Kd") ||
                             line.StartsWith("map_Ks"))
                         {
@@ -136,6 +137,7 @@ private void LoadMaterials(string path, Scene scene)
                         }
                         else if (line.StartsWith("d") || line.StartsWith("Tr"))
                         {
+                            line = line.Replace(".", ",");
                             alpha = Convert.ToSingle(ReadMaterialValue(line));
                             SetAlphaForMaterial(mtl, alpha);
                         }