diff --git a/src/veh_type.cpp b/src/veh_type.cpp
index 835e8f75f2a41..c180858c6e4ff 100644
--- a/src/veh_type.cpp
+++ b/src/veh_type.cpp
@@ -952,9 +952,9 @@ void vpart_info::check() const
                       id.c_str() );
         }
     }
-    if( transform_terrain_info && !( transform_terrain_info.post_terrain ||
-                                     transform_terrain_info.post_furniture ||
-                                     transform_terrain_info.post_field ) ) {
+    if( !!transform_terrain_info && !( transform_terrain_info->post_terrain ||
+                                     transform_terrain_info->post_furniture ||
+                                     transform_terrain_info->post_field ) ) {
         debugmsg( "transform_terrain_info must contain at least one of post_terrain, post_furniture and post_field for vehicle part %s",
                   id.c_str() );
     }