diff --git a/lldb/include/lldb/Host/windows/windows.h b/lldb/include/lldb/Host/windows/windows.h
index 3dc9f77f8e24..98a675eed4fe 100644
--- a/lldb/include/lldb/Host/windows/windows.h
+++ b/lldb/include/lldb/Host/windows/windows.h
@@ -21,6 +21,7 @@
 #undef GetUserName
 #undef LoadImage
 #undef CreateProcess
+#undef Yield
 #undef far
 #undef near
 #undef FAR