diff --git a/irobot.patch b/irobot.patch
deleted file mode 100644
index 1abd26e..0000000
--- a/irobot.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-diff --git a/src/mame/atari/irobot_m.cpp b/src/mame/atari/irobot_m.cpp
-index dfb5987e7e8..f6d24db5a9a 100644
---- a/src/mame/atari/irobot_m.cpp
-+++ b/src/mame/atari/irobot_m.cpp
-@@ -315,12 +315,11 @@ void irobot_state::irmb_dout(const irmb_ops *curop, uint32_t d)
- void irobot_state::load_oproms()
- {
- 	uint8_t *MB = memregion("proms")->base() + 0x20;
--	int i;
- 
- 	/* allocate RAM */
- 	m_mbops = std::make_unique<irmb_ops[]>(1024);
- 
--	for (i = 0; i < 1024; i++)
-+	for (int i = 0; i < 1024; i++)
- 	{
- 		int nxtadd, func, ramsel, diradd, latchmask, dirmask, time;
- 
-@@ -387,12 +386,14 @@ void irobot_state::load_oproms()
- void irobot_state::init_irobot()
- {
- 	for (int i = 0; i < 16; i++)
--	{
--		m_irmb_stack[i] = &m_mbops[0];
- 		m_irmb_regs[i] = 0;
--	}
--	m_irmb_latch = 0;
-+
- 	load_oproms();
-+
-+	for (int i = 0; i < 16; i++)
-+		m_irmb_stack[i] = &m_mbops[0];
-+
-+	m_irmb_latch = 0;
- }
- 
- TIMER_DEVICE_CALLBACK_MEMBER(irobot_state::irobot_irmb_done_callback)