diff --git a/libs_required/ACG/GL/ShaderGenerator.cc b/libs_required/ACG/GL/ShaderGenerator.cc
index ff0b97d837219520f829eabff29f9a6e08c395ec..9be0f34368ee700f57377c9c2e5daf4d8bc6601a 100644
--- a/libs_required/ACG/GL/ShaderGenerator.cc
+++ b/libs_required/ACG/GL/ShaderGenerator.cc
@@ -2764,9 +2764,8 @@ QString ShaderGenDesc::toString() const
         resStrm << "}";
     }
   }
-
-
   resStrm << "\nshaderDesc.shadeMode: " << shadeModeString[shadeMode];
+  resStrm << "\nshaderDesc.twoSidedLighting: " << (twoSidedLighting ? "Yes" : "No");
   resStrm << "\nshaderDesc.vertexColors: " << vertexColors;
   resStrm << "\nshaderDesc.textured(): " << textured();
   for (std::map<size_t,TextureType>::const_iterator iter = textureTypes_.begin(); iter != textureTypes_.end();++iter)