diff --git a/src/4.advanced_opengl/11.2.anti_aliasing_offscreen/anti_aliasing_offscreen.cpp b/src/4.advanced_opengl/11.2.anti_aliasing_offscreen/anti_aliasing_offscreen.cpp
index 6056bbc..bc74e9f 100644
--- a/src/4.advanced_opengl/11.2.anti_aliasing_offscreen/anti_aliasing_offscreen.cpp
+++ b/src/4.advanced_opengl/11.2.anti_aliasing_offscreen/anti_aliasing_offscreen.cpp
@@ -200,7 +200,7 @@ int main()
 
     // shader configuration
     // --------------------
-    shader.use();
+    screenShader.use();
     screenShader.setInt("screenTexture", 0);
 
     // render loop