diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/PythonReadline.h b/lldb/source/Plugins/ScriptInterpreter/Python/PythonReadline.h
index c0d39324e034..c75219eb1a4f 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/PythonReadline.h
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/PythonReadline.h
@@ -9,6 +9,8 @@
 #ifndef LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_PYTHONREADLINE_H
 #define LLDB_PLUGINS_SCRIPTINTERPRETER_PYTHON_PYTHONREADLINE_H
 
+#include "lldb/Host/Config.h"
+
 #if LLDB_ENABLE_LIBEDIT && defined(__linux__)
 // NOTE: Since Python may define some pre-processor definitions which affect the
 // standard headers on some systems, you must include Python.h before any