diff --git a/src/main.c b/src/main.c
index d0a2130..8e8bcb0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4,6 +4,7 @@
 
 #include "vertexShader.c"
 #include "fragmentShader.c"
+#include "sceneGraph.c"
 
 #include "matrixMath.h"
 #include "transformation.h"
diff --git a/src/vertexShader.glsl b/src/vertexShader.glsl
index d94a0ff..96c0d92 100644
--- a/src/vertexShader.glsl
+++ b/src/vertexShader.glsl
@@ -15,6 +15,7 @@ out vec3 fragmentPosition;
 out vec2 textureCoordinate;
 flat out mat3 TBN;
 out vec3 skyboxCoord;
+out vec4 tPosition;
 
 void main() {
 	if (isSkybox) {
@@ -23,7 +24,7 @@ void main() {
 
 		vec4 modelViewPos = modelView * vec4(aPosition, 1.0);
 
-		gl_position = projection * vec4(aPosition, 1.0);
+		tPosition = projection * vec4(aPosition, 1.0);
 
 		fragmentPosition = vec3(modelViewPos);
 	} else {