diff --git a/QtMeshViewer/Resources/fshader.glsl b/QtMeshViewer/Resources/fshader.glsl
index 12256d7..6af05f3 100644
--- a/QtMeshViewer/Resources/fshader.glsl
+++ b/QtMeshViewer/Resources/fshader.glsl
@@ -70,8 +70,8 @@ void main()
 			mat3 tbn = transpose(mat3(surfaceTangent, surfaceBitangent, surfaceNormal));
 			normal = texture2D(tx1, v_surfaceUV).rgb;
 			normal = normalize(normal * 2.0 -1.0);
-			surfaceToLight = tbn * surfaceToLight;
-			surfaceToCamera = tbn * surfaceToCamera;
+			surfaceToLight = normalize(tbn * surfaceToLight);
+			surfaceToCamera = normalize(tbn * surfaceToCamera);
 		}
 
 
@@ -98,7 +98,7 @@ void main()
 		float specularWeight = 1;
 		if(material.hasSpecularmap)
 			specularWeight = surfaceColor.a;
-		vec3 specColor = specularWeight * material.specularColor;
+		vec3 specColor = specularWeight * 1/255 * material.specularColor;
 
 		vec3 specular = specularCoefficient * specColor * light.intensities;
 
diff --git a/preview.jpg b/preview.jpg
index 3dd55da..42a3ad7 100644
Binary files a/preview.jpg and b/preview.jpg differ