diff --git a/lighting/v_shader.glsl b/lighting/v_shader.glsl
index 4524a51..7c2af7f 100644
--- a/lighting/v_shader.glsl
+++ b/lighting/v_shader.glsl
@@ -11,6 +11,6 @@ varying vec3 normal_i;
 void main(void)
 {
     gl_Position = projection * modelview * vec4(pos, 1);
-    pos_i = vec3(gl_Position.x, gl_Position.y, gl_Position.z);
+    pos_i = gl_Position.xyz;
     normal_i = normal;
 }