diff --git a/stepmania/src/ThemeMetric.h b/stepmania/src/ThemeMetric.h
index 4e81337bae..5ca6444e9c 100644
--- a/stepmania/src/ThemeMetric.h
+++ b/stepmania/src/ThemeMetric.h
@@ -282,7 +282,7 @@ public:
 		// call function with 0 arguments and 1 result
 		lua_call(LUA->L, 0, 1); 
 
-		LuaHelpers::FromStack( m_currentValue, -1, LUA->L );
+		LuaHelpers::PopStack( m_currentValue, LUA->L );
 		return m_currentValue;
 	}