diff --git a/Effects/tree.eff b/Effects/tree.eff
index 13778e45d..91a49c2c5 100644
--- a/Effects/tree.eff
+++ b/Effects/tree.eff
@@ -32,6 +32,7 @@
 		<dust_cover_factor><use>/environment/surface/dust-cover-factor</use></dust_cover_factor>
 		<fogtype><use>/sim/rendering/shaders/skydome</use></fogtype>
 		<fogstructure><use>/environment/fog-structure</use></fogstructure>
+		<cloud_self_shading><use>/environment/cloud-self-shading</use></cloud_self_shading>
 		<quality_level><use>/sim/rendering/shaders/landmass</use></quality_level>
 		<tquality_level><use>/sim/rendering/shaders/transition</use></tquality_level>
 		<wind_effects><use>/sim/rendering/shaders/wind-effects</use></wind_effects>
@@ -104,6 +105,11 @@
         <type>float</type>
         <value><use>ground_scattering</use></value>
       </uniform>
+      <uniform>
+        <name>cloud_self_shading</name>
+        <type>float</type>
+        <value><use>cloud_self_shading</use></value>
+      </uniform>
       <uniform>
         <name>terminator</name>
         <type>float</type>
@@ -246,6 +252,11 @@
         <type>float</type>
         <value><use>ground_scattering</use></value>
       </uniform>
+     <uniform>
+        <name>cloud_self_shading</name>
+        <type>float</type>
+        <value><use>cloud_self_shading</use></value>
+      </uniform>
       <uniform>
         <name>terminator</name>
         <type>float</type>
diff --git a/Shaders/tree-haze.frag b/Shaders/tree-haze.frag
index 443e752c7..75e1740cc 100644
--- a/Shaders/tree-haze.frag
+++ b/Shaders/tree-haze.frag
@@ -15,6 +15,7 @@ varying float yprime_alt;
 uniform float visibility;
 uniform float avisibility;
 uniform float scattering;
+uniform float cloud_self_shading;
 uniform float terminator;
 uniform float terrain_alt; 
 uniform float hazeLayerAltitude;
@@ -131,7 +132,7 @@ void main()
     mie_angle = gl_Color.a;
     vec4 texel = texture2D(texture, gl_TexCoord[0].st);
 
-
+    float effective_scattering = min(scattering, cloud_self_shading);
 
 if (quality_level > 3)
 	{
@@ -238,14 +239,14 @@ if (visibility < avisibility)
 	{
 	transmission_arg = transmission_arg + (distance_in_layer/visibility);
 	// this combines the Weber-Fechner intensity
-	eqColorFactor = 1.0 - 0.1 * delta_zv/visibility - (1.0 -scattering);
+	eqColorFactor = 1.0 - 0.1 * delta_zv/visibility - (1.0 -effective_scattering);
 
 	}
 else 
 	{
 	transmission_arg = transmission_arg + (distance_in_layer/avisibility);
 	// this combines the Weber-Fechner intensity
-	eqColorFactor = 1.0 - 0.1 * delta_zv/avisibility - (1.0 -scattering);
+	eqColorFactor = 1.0 - 0.1 * delta_zv/avisibility - (1.0 -effective_scattering);
 	}