diff --git a/OpenRa.FileFormats/Map.cs b/OpenRa.FileFormats/Map.cs
index 0827a6a71c..342bce0c8c 100644
--- a/OpenRa.FileFormats/Map.cs
+++ b/OpenRa.FileFormats/Map.cs
@@ -141,7 +141,7 @@ namespace OpenRa.FileFormats
 
 		void ReadTrees( IniFile file )
 		{
-			IniSection terrain = file.GetSection( "TERRAIN" );
+			IniSection terrain = file.GetSection( "TERRAIN", true );
 			if( terrain == null )
 				return;