diff --git a/src/gb.rs b/src/gb.rs
index 4556df3ccfc8d0868b78c04b69c8df5491cde3f0..84191d0f22d2fcb27ed1b48a688687f5ea97e22d 100644
--- a/src/gb.rs
+++ b/src/gb.rs
@@ -1015,7 +1015,7 @@ impl GameBoy {
     }
 
     pub fn load_rom_ws(&mut self, data: &[u8]) -> Cartridge {
-        let rom = self.load_rom(data);
+        let rom = self.load_rom(data, None);
         rom.set_rumble_cb(|active| {
             rumble_callback(active);
         });