diff --git a/source/gameengine/Converter/BL_BlenderDataConversion.cpp b/source/gameengine/Converter/BL_BlenderDataConversion.cpp
index c2566caba1e..3cb223e5dce 100644
--- a/source/gameengine/Converter/BL_BlenderDataConversion.cpp
+++ b/source/gameengine/Converter/BL_BlenderDataConversion.cpp
@@ -1655,11 +1655,16 @@ static KX_LightObject *gamelight_from_blamp(Object *ob, Lamp *la, unsigned int l
 	lightobj.m_nodiffuse = (la->mode & LA_NO_DIFF) != 0;
 	lightobj.m_nospecular = (la->mode & LA_NO_SPEC) != 0;
 	
-	if (la->mode & LA_NEG)
-	{
-		lightobj.m_red = -lightobj.m_red;
-		lightobj.m_green = -lightobj.m_green;
-		lightobj.m_blue = -lightobj.m_blue;
+	bool glslmat = converter->GetGLSLMaterials();
+
+	// in GLSL NEGATIVE LAMP is handled inside the lamp update function
+	if(glslmat==0) {
+		if (la->mode & LA_NEG)
+		{
+			lightobj.m_red = -lightobj.m_red;
+			lightobj.m_green = -lightobj.m_green;
+			lightobj.m_blue = -lightobj.m_blue;
+		}
 	}
 		
 	if (la->type==LA_SUN) {
@@ -1671,7 +1676,7 @@ static KX_LightObject *gamelight_from_blamp(Object *ob, Lamp *la, unsigned int l
 	}
 
 	gamelight = new KX_LightObject(kxscene, KX_Scene::m_callbacks, rendertools,
-		lightobj, converter->GetGLSLMaterials());
+		lightobj, glslmat);
 
 	BL_ConvertLampIpos(la, gamelight, converter);