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-rw-r--r--test-suite/ide/undo012.fake1
1 files changed, 1 insertions, 0 deletions
diff --git a/test-suite/ide/undo012.fake b/test-suite/ide/undo012.fake
index b3d1c6d5..c95df1b1 100644
--- a/test-suite/ide/undo012.fake
+++ b/test-suite/ide/undo012.fake
@@ -3,6 +3,7 @@
#
# Test backtracking in presence of nested proofs
#
+ADD { Set Nested Proofs Allowed. }
ADD { Lemma aa : True -> True /\ True. }
ADD { intro H. }
ADD { split. }