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-rw-r--r--src/sage/combinat/crystals/subcrystal.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sage/combinat/crystals/subcrystal.py b/src/sage/combinat/crystals/subcrystal.py
index 476fa40..c1bfd52 100644
--- a/src/sage/combinat/crystals/subcrystal.py
+++ b/src/sage/combinat/crystals/subcrystal.py
@@ -33,7 +33,7 @@ from sage.categories.finite_crystals import FiniteCrystals
from sage.combinat.root_system.cartan_type import CartanType
from sage.rings.integer import Integer
from sage.rings.infinity import infinity
-from sage.structure.sage_object import richcmp
+from sage.structure.richcmp import richcmp
class Subcrystal(UniqueRepresentation, Parent):