diff --git a/Shaders/HDR/model_building.vert b/Shaders/HDR/model_building.vert
index fd90be06f..f0dfd0faf 100644
--- a/Shaders/HDR/model_building.vert
+++ b/Shaders/HDR/model_building.vert
@@ -1,4 +1,5 @@
 #version 330 core
+#extension GL_EXT_draw_instanced : enable
 
 layout(location = 0)  in vec4 pos;
 layout(location = 1)  in vec3 normal;