fixed incorrectly using steelwall border for non-R'n'D engine levels

diff --git a/src/tools.c b/src/tools.c
index d05d636588618f25027e5db12b70e69b914c780b..078af1ba745e4fe6ae521f619d4a38d771d223cc 100644 (file)
--- a/src/tools.c
+++ b/src/tools.c
@@ -1462,8 +1462,8 @@ void SetBorderElement(void)
 
   BorderElement = EL_EMPTY;
 
-  // the MM game engine does not use a visible border element
-  if (level.game_engine_type == GAME_ENGINE_TYPE_MM)
+  // only the R'n'D game engine may use an additional steelwall border
+  if (level.game_engine_type != GAME_ENGINE_TYPE_RND)
     return;
 
   for (y = 0; y < lev_fieldy && BorderElement == EL_EMPTY; y++)