diff --git a/rpcs3/Emu/Cell/lv2/sys_spu.cpp b/rpcs3/Emu/Cell/lv2/sys_spu.cpp
index d9aa0c53f3..51b6721048 100644
--- a/rpcs3/Emu/Cell/lv2/sys_spu.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_spu.cpp
@@ -1831,6 +1831,11 @@ error_code sys_spu_thread_write_snr(ppu_thread& ppu, u32 id, u32 number, u32 val
 
 	sys_spu.trace("sys_spu_thread_write_snr(id=0x%x, number=%d, value=0x%x)", id, number, value);
 
+	if (number > 1)
+	{
+		return CELL_EINVAL;
+	}
+
 	const auto [thread, group] = lv2_spu_group::get_thread(id);
 
 	if (!thread) [[unlikely]]
@@ -1838,11 +1843,6 @@ error_code sys_spu_thread_write_snr(ppu_thread& ppu, u32 id, u32 number, u32 val
 		return CELL_ESRCH;
 	}
 
-	if (number > 1)
-	{
-		return CELL_EINVAL;
-	}
-
 	thread->push_snr(number, value);
 
 	return CELL_OK;
@@ -1919,17 +1919,15 @@ error_code sys_spu_thread_group_disconnect_event(ppu_thread& ppu, u32 id, u32 et
 	if (!ep)
 	{
 		sys_spu.error("sys_spu_thread_group_disconnect_event(): unknown event type (%d)", et);
-		return CELL_EINVAL;
+		return CELL_OK;
 	}
 
+	// No error checking is performed
+
 	std::lock_guard lock(group->mutex);
 
-	if (!lv2_obj::check(*ep))
-	{
-		return CELL_EINVAL;
-	}
-
 	ep->reset();
+
 	return CELL_OK;
 }
 
@@ -2092,6 +2090,11 @@ error_code sys_spu_thread_group_connect_event_all_threads(ppu_thread& ppu, u32 i
 
 	sys_spu.warning("sys_spu_thread_group_connect_event_all_threads(id=0x%x, eq=0x%x, req=0x%llx, spup=*0x%x)", id, eq, req, spup);
 
+	if (!req)
+	{
+		return CELL_EINVAL;
+	}
+
 	const auto group = idm::get<lv2_spu_group>(id);
 	const auto queue = idm::get<lv2_obj, lv2_event_queue>(eq);
 
@@ -2100,11 +2103,6 @@ error_code sys_spu_thread_group_connect_event_all_threads(ppu_thread& ppu, u32 i
 		return CELL_ESRCH;
 	}
 
-	if (!req)
-	{
-		return CELL_EINVAL;
-	}
-
 	std::unique_lock lock(group->mutex);
 
 	if (auto state = +group->run_state;
@@ -2174,6 +2172,11 @@ error_code sys_spu_thread_group_disconnect_event_all_threads(ppu_thread& ppu, u3
 
 	sys_spu.warning("sys_spu_thread_group_disconnect_event_all_threads(id=0x%x, spup=%d)", id, spup);
 
+	if (spup > 63)
+	{
+		return CELL_EINVAL;
+	}
+
 	const auto group = idm::get<lv2_spu_group>(id);
 
 	if (!group)
@@ -2181,11 +2184,6 @@ error_code sys_spu_thread_group_disconnect_event_all_threads(ppu_thread& ppu, u3
 		return CELL_ESRCH;
 	}
 
-	if (spup > 63)
-	{
-		return CELL_EINVAL;
-	}
-
 	std::lock_guard lock(group->mutex);
 
 	for (auto& t : group->threads)