diff --git a/materials.xml b/materials.xml
index 9d5fa646b..b572116d1 100644
--- a/materials.xml
+++ b/materials.xml
@@ -1016,9 +1016,6 @@ Shared parameters for various materials.
 </material>
 
 <material>
- <name>Grass</name>
- <name>Airport</name>
- <name>AirportKeep</name>
  <name>GrassCover</name>
  <name>HerbTundraCover</name>
  <name>MixedTundraCover</name>
@@ -1029,6 +1026,16 @@ Shared parameters for various materials.
  <light-coverage>4000000.0</light-coverage>
 </material>
 
+<material>
+ <name>Grass</name>
+ <name>Airport</name>
+ <name>AirportKeep</name>
+ <texture>Terrain/airport.rgb</texture>
+ <xsize>125</xsize>
+ <ysize>125</ysize>
+ <light-coverage>4000000.0</light-coverage>
+</material>
+
 <material>
  <name>MixedCropPastureCover</name>
  <texture>Terrain/mixedcrop.rgb</texture>