diff -r defc90b7898a -r be1775555bbd src/newgrf_spritegroup.cpp
--- a/src/newgrf_spritegroup.cpp	Sat Mar 24 14:56:31 2007 +0000
+++ b/src/newgrf_spritegroup.cpp	Sat Mar 24 15:19:35 2007 +0000
@@ -94,7 +94,7 @@
 		case 0x1A: return UINT_MAX;
 		case 0x1B: return GB(_display_opt, 0, 6);
 		case 0x1C: return object->last_value;
-		case 0x20: return _opt.landscape == LT_HILLY ? GetSnowLine() : 0xFF;
+		case 0x20: return _opt.landscape == LT_ARCTIC ? GetSnowLine() : 0xFF;
 
 		/* Not a common variable, so evalute the feature specific variables */
 		default: return object->GetVariable(object, variable, parameter, available);