diff --git a/lldb/unittests/Host/FileActionTest.cpp b/lldb/unittests/Host/FileActionTest.cpp
index 56227cd587e5..ac067c4d3349 100644
--- a/lldb/unittests/Host/FileActionTest.cpp
+++ b/lldb/unittests/Host/FileActionTest.cpp
@@ -34,7 +34,9 @@ TEST(FileActionTest, OpenReadWrite) {
 TEST(FileActionTest, OpenReadOnly) {
   FileAction Action;
   Action.Open(49, FileSpec("/tmp_1"), /*read*/ true, /*write*/ false);
+#ifndef _WIN32
   EXPECT_TRUE(Action.GetActionArgument() & (O_NOCTTY | O_RDONLY));
+#endif
   EXPECT_FALSE(Action.GetActionArgument() & O_WRONLY);
 }