diff --git a/package/Shaders/Sky.hlsl b/package/Shaders/Sky.hlsl
index 219962495b..4906306410 100644
--- a/package/Shaders/Sky.hlsl
+++ b/package/Shaders/Sky.hlsl
@@ -193,6 +193,10 @@ cbuffer AlphaTestRefCB : register(b11)
 #		include "CloudShadows/CloudShadows.hlsli"
 #	endif
 
+#	if defined(EXP_HEIGHT_FOG)
+#		include "ExponentialHeightFog/ExponentialHeightFog.hlsli"
+#	endif
+
 #	ifdef HDR_OUTPUT
 #		include "HDRDisplay/HDRSun.hlsli"
 #		include "Common/Random.hlsli"