diff --git a/test/lit.cfg b/test/lit.cfg
index 575c1273338..6f44bb3d8c6 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -9,8 +9,20 @@ import re
 # name: The name of this test suite.
 config.name = 'LLVM'
 
+# Tweak PATH for Win32 to decide to use bash.exe or not.
+if sys.platform in ['win32']:
+    # Seek sane tools in directories and set to $PATH.
+    path = getattr(config, 'lit_tools_dir', None)
+    path = lit.getToolsPath(path,
+                            config.environment['PATH'],
+                            ['cmp.exe', 'grep.exe', 'sed.exe'])
+    if path is not None:
+        path = os.path.pathsep.join((path,
+                                     config.environment['PATH']))
+        config.environment['PATH'] = path
+
 # testFormat: The test format to use to interpret tests.
-execute_external = (sys.platform in ['win32']
+execute_external = (not sys.platform in ['win32']
                     or lit.getBashPath() not in [None, ""])
 config.test_format = lit.formats.ShTest(execute_external)
 
@@ -29,18 +41,6 @@ config.excludes = ['Inputs']
 # test_source_root: The root path where tests are located.
 config.test_source_root = os.path.dirname(__file__)
 
-# Tweak PATH for Win32
-if sys.platform in ['win32']:
-    # Seek sane tools in directories and set to $PATH.
-    path = getattr(config, 'lit_tools_dir', None)
-    path = lit.getToolsPath(path,
-                            config.environment['PATH'],
-                            ['cmp.exe', 'grep.exe', 'sed.exe'])
-    if path is not None:
-        path = os.path.pathsep.join((path,
-                                     config.environment['PATH']))
-        config.environment['PATH'] = path
-
 # test_exec_root: The root path where tests should be run.
 llvm_obj_root = getattr(config, 'llvm_obj_root', None)
 if llvm_obj_root is not None: