diff --git a/lldb/test/API/lang/swift/closures_var_not_captured/TestSwiftClosureVarNotCaptured.py b/lldb/test/API/lang/swift/closures_var_not_captured/TestSwiftClosureVarNotCaptured.py
index a18495b6b6516..b483abf5b9b04 100644
--- a/lldb/test/API/lang/swift/closures_var_not_captured/TestSwiftClosureVarNotCaptured.py
+++ b/lldb/test/API/lang/swift/closures_var_not_captured/TestSwiftClosureVarNotCaptured.py
@@ -54,6 +54,8 @@ def get_to_bkpt(self, bkpt_name):
     @swiftTest
     def test_simple_closure(self):
         self.build()
+        # rdar://158447239
+        self.runCmd('settings set target.experimental.use-DIL false')
         (target, process, thread) = self.get_to_bkpt("break_simple_closure")
         check_not_captured_error(self, thread.frames[0], "var_in_foo", "func_1(arg:)")
         check_not_captured_error(self, thread.frames[0], "arg", "func_1(arg:)")
@@ -62,6 +64,8 @@ def test_simple_closure(self):
     @swiftTest
     def test_nested_closure(self):
         self.build()
+        # rdar://158447239
+        self.runCmd('settings set target.experimental.use-DIL false')
         (target, process, thread) = self.get_to_bkpt("break_double_closure_1")
         check_not_captured_error(self, thread.frames[0], "var_in_foo", "func_2(arg:)")
         check_not_captured_error(self, thread.frames[0], "arg", "func_2(arg:)")
@@ -88,6 +92,8 @@ def test_nested_closure(self):
     @skipIf(oslist=["windows", "linux"])
     def test_async_closure(self):
         self.build()
+        # rdar://158447239
+        self.runCmd('settings set target.experimental.use-DIL false')
         (target, process, thread) = self.get_to_bkpt("break_async_closure_1")
         check_not_captured_error(self, thread.frames[0], "var_in_foo", "func_3(arg:)")
         check_not_captured_error(self, thread.frames[0], "arg", "func_3(arg:)")
@@ -109,6 +115,8 @@ def test_async_closure(self):
     @swiftTest
     def test_ctor_class_closure(self):
         self.build()
+        # rdar://158447239
+        self.runCmd('settings set target.experimental.use-DIL false')
         (target, process, thread) = self.get_to_bkpt("break_ctor_class")
         check_not_captured_error(
             self, thread.frames[0], "input", "MY_CLASS.init(input:)"
@@ -166,6 +174,8 @@ def test_ctor_class_closure(self):
     @swiftTest
     def test_ctor_struct_closure(self):
         self.build()
+        # rdar://158447239
+        self.runCmd('settings set target.experimental.use-DIL false')
         (target, process, thread) = self.get_to_bkpt("break_ctor_struct")
         check_not_captured_error(
             self, thread.frames[0], "input", "MY_STRUCT.init(input:)"
@@ -223,6 +233,8 @@ def test_ctor_struct_closure(self):
     @swiftTest
     def test_ctor_enum_closure(self):
         self.build()
+        # rdar://158447239
+        self.runCmd('settings set target.experimental.use-DIL false')
         (target, process, thread) = self.get_to_bkpt("break_ctor_enum")
         check_not_captured_error(
             self, thread.frames[0], "input", "MY_ENUM.init(input:)"