diff --git a/src/newgrf_roadstop.cpp b/src/newgrf_roadstop.cpp
index 1055ea84bb..c3410e3032 100644
--- a/src/newgrf_roadstop.cpp
+++ b/src/newgrf_roadstop.cpp
@@ -90,7 +90,7 @@ uint32_t RoadStopScopeResolver::GetVariable(byte variable, [[maybe_unused]] uint
 			return 2;
 
 		/* Terrain type */
-		case 0x42: return this->tile == INVALID_TILE ? 0 : GetTerrainType(this->tile, TCX_NORMAL); // terrain_type
+		case 0x42: return this->tile == INVALID_TILE ? 0 : (GetTileSlope(this->tile) << 8 | GetTerrainType(this->tile, TCX_NORMAL));
 
 		/* Road type */
 		case 0x43: return get_road_type_variable(RTT_ROAD);