diff --git a/Effects/urban.eff b/Effects/urban.eff
index 3e71ec3a4..336008fa8 100644
--- a/Effects/urban.eff
+++ b/Effects/urban.eff
@@ -3,13 +3,9 @@
   <name>Effects/urban</name>
   <inherits-from>Effects/terrain-default</inherits-from>
   <parameters>
-    <texture n="2">
-      <image>Textures.high/Terrain/city1-relief-light.png</image>
-      <filter>linear-mipmap-linear</filter>
-      <wrap-s>repeat</wrap-s>
-      <wrap-t>repeat</wrap-t>
-      <internal-format>normalized</internal-format>
-    </texture>
+    <depth-factor type="float">0.008</depth-factor>
+    <tile-size type="float">2000.0</tile-size>
+    <night-color type="vec3d">0.75 0.59 0.05</night-color>
   </parameters>
   <generate>
     <normal type="int">15</normal>
@@ -100,17 +96,17 @@
       <uniform>
         <name>depth_factor</name>
         <type>float</type>
-        <value type="float">0.008</value>
+        <value><use>depth-factor</use></value>
       </uniform>
       <uniform>
         <name>tile_size</name>
         <type>float</type>
-        <value type="float">2000.0</value>
+        <value><use>tile-size</use></value>
       </uniform>
       <uniform>
         <name>night_color</name>
         <type>float-vec3</type>
-        <value type="vec3d">0.75 0.59 0.05</value>
+        <value><use>night-color</use></value>
       </uniform>
     </pass>
   </technique>