diff --git a/mlir/test/lit.cfg.py b/mlir/test/lit.cfg.py
index 98d0ddd9a2be1..f0d4f35ba3e22 100644
--- a/mlir/test/lit.cfg.py
+++ b/mlir/test/lit.cfg.py
@@ -18,12 +18,15 @@
 # name: The name of this test suite.
 config.name = "MLIR"
 
+# TODO: Consolidate the logic for turning on the internal shell by default for all LLVM test suites.
+# See https://github.com/llvm/llvm-project/issues/106636 for more details.
+#
 # We prefer the lit internal shell which provides a better user experience on failures
 # unless the user explicitly disables it with LIT_USE_INTERNAL_SHELL=0 env var.
 use_lit_shell = True
 lit_shell_env = os.environ.get("LIT_USE_INTERNAL_SHELL")
 if lit_shell_env:
-  use_lit_shell = not lit.util.pythonize_bool(lit_shell_env)
+    use_lit_shell = lit.util.pythonize_bool(lit_shell_env)
 
 config.test_format = lit.formats.ShTest(execute_external=not use_lit_shell)
 
diff --git a/polly/test/UnitIsl/lit.cfg b/polly/test/UnitIsl/lit.cfg
index 0944d543572d8..4b68f1460c3d8 100644
--- a/polly/test/UnitIsl/lit.cfg
+++ b/polly/test/UnitIsl/lit.cfg
@@ -17,12 +17,15 @@ config.name = 'Polly - isl unit tests'
 # For now we require '&&' between commands, until they get globally killed and
 # the test runner updated.
 #
+# TODO: Consolidate the logic for turning on the internal shell by default for all LLVM test suites.
+# See https://github.com/llvm/llvm-project/issues/106636 for more details.
+#
 # We prefer the lit internal shell which provides a better user experience on failures
 # unless the user explicitly disables it with LIT_USE_INTERNAL_SHELL=0 env var.
 use_lit_shell = True
 lit_shell_env = os.environ.get("LIT_USE_INTERNAL_SHELL")
 if lit_shell_env:
-  use_lit_shell = not lit.util.pythonize_bool(lit_shell_env)
+	use_lit_shell = lit.util.pythonize_bool(lit_shell_env)
 
 config.test_format = lit.formats.ShTest(execute_external=not use_lit_shell)
 
diff --git a/polly/test/lit.cfg b/polly/test/lit.cfg
index 156c1f97f5d3a..075ebdacbdc94 100644
--- a/polly/test/lit.cfg
+++ b/polly/test/lit.cfg
@@ -20,12 +20,15 @@ config.name = 'Polly'
 # For now we require '&&' between commands, until they get globally killed and
 # the test runner updated.
 #
+# TODO: Consolidate the logic for turning on the internal shell by default for all LLVM test suites.
+# See https://github.com/llvm/llvm-project/issues/106636 for more details.
+#
 # We prefer the lit internal shell which provides a better user experience on failures
 # unless the user explicitly disables it with LIT_USE_INTERNAL_SHELL=0 env var.
 use_lit_shell = True
 lit_shell_env = os.environ.get("LIT_USE_INTERNAL_SHELL")
 if lit_shell_env:
-  use_lit_shell = not lit.util.pythonize_bool(lit_shell_env)
+    use_lit_shell = lit.util.pythonize_bool(lit_shell_env)
 
 config.test_format = lit.formats.ShTest(execute_external=not use_lit_shell)