diff --git a/stepmania/src/Preference.cpp b/stepmania/src/Preference.cpp
index 002b35a056..547bf2af23 100644
--- a/stepmania/src/Preference.cpp
+++ b/stepmania/src/Preference.cpp
@@ -4,6 +4,7 @@
 #include "IniFile.h"
 #include "RageLog.h"
 #include "LuaFunctions.h"
+#include "LuaManager.h"
 
 static const CString PrefsGroupNames[NUM_PREFS_GROUPS] = {
 	"Debug",