5 files changed, 5 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. }
diff --git a/test-suite/ide/undo013.fake b/test-suite/ide/undo013.fake
index 921a9d0f..a3ccefd2 100644
--- a/test-suite/ide/undo013.fake
+++ b/test-suite/ide/undo013.fake
@@ -4,6 +4,7 @@
 # Test backtracking in presence of nested proofs
 # Second, trigger the undo of an inner proof
 #
+ADD { Set Nested Proofs Allowed. }
 ADD { Lemma aa : True -> True /\ True. }
 ADD { intro H. }
 ADD { split. }
diff --git a/test-suite/ide/undo014.fake b/test-suite/ide/undo014.fake
index f5fe7747..13e71822 100644
--- a/test-suite/ide/undo014.fake
+++ b/test-suite/ide/undo014.fake
@@ -4,6 +4,7 @@
 # Test backtracking in presence of nested proofs
 # Third, undo inside an inner proof
 #
+ADD { Set Nested Proofs Allowed. }
 ADD { Lemma aa : True -> True /\ True. }
 ADD { intro H. }
 ADD { split. }
diff --git a/test-suite/ide/undo015.fake b/test-suite/ide/undo015.fake
index a1e5c947..9cbd6446 100644
--- a/test-suite/ide/undo015.fake
+++ b/test-suite/ide/undo015.fake
@@ -4,6 +4,7 @@
 # Test backtracking in presence of nested proofs
 # Fourth, undo from an inner proof to a above proof
 #
+ADD { Set Nested Proofs Allowed. }
 ADD { Lemma aa : True -> True /\ True. }
 ADD { intro H. }
 ADD { split. }
diff --git a/test-suite/ide/undo016.fake b/test-suite/ide/undo016.fake
index f9414c1e..15bd3cc9 100644
--- a/test-suite/ide/undo016.fake
+++ b/test-suite/ide/undo016.fake
@@ -4,6 +4,7 @@
 # Test backtracking in presence of nested proofs
 # Fifth, undo from an inner proof to a previous inner proof
 #
+ADD { Set Nested Proofs Allowed. }
 ADD { Lemma aa : True -> True /\ True. }
 ADD { intro H. }
 ADD { split. }