diff --git a/pysollib/games/royalcotillion.py b/pysollib/games/royalcotillion.py
index 10b98ab3..7818de0b 100644
--- a/pysollib/games/royalcotillion.py
+++ b/pysollib/games/royalcotillion.py
@@ -32,7 +32,7 @@ from pysollib.game import Game
 from pysollib.layout import Layout
 from pysollib.hint import DefaultHint, CautiousDefaultHint
 
-from unionsquare import UnionSquare_Foundation
+from pysollib.games.unionsquare import UnionSquare_Foundation
 
 from pysollib.util import ACE, ANY_RANK, ANY_SUIT, JACK, KING, NO_RANK
 
@@ -1383,11 +1383,11 @@ registerGame(GameInfo(97, Carpet, "Carpet",
                       GI.GT_1DECK_TYPE, 1, 0, GI.SL_MOSTLY_LUCK))
 registerGame(GameInfo(391, BritishConstitution, "British Constitution",
                       GI.GT_2DECK_TYPE, 2, 0, GI.SL_BALANCED,
-                      ranks=range(11),  # without Queens and Kings
+                      ranks=list(range(11)),  # without Queens and Kings
                       altnames=("Constitution",)))
 registerGame(GameInfo(392, NewBritishConstitution, "New British Constitution",
                       GI.GT_2DECK_TYPE | GI.GT_ORIGINAL, 2, 0, GI.SL_BALANCED,
-                      ranks=range(11)  # without Queens and Kings
+                      ranks=list(range(11))  # without Queens and Kings
                       ))
 registerGame(GameInfo(443, Twenty, "Twenty",
                       GI.GT_2DECK_TYPE, 2, 0, GI.SL_BALANCED))