diff --git a/rpcs3/Emu/Cell/lv2/sys_spu.cpp b/rpcs3/Emu/Cell/lv2/sys_spu.cpp
index adb3bc47cc..692d17fea1 100644
--- a/rpcs3/Emu/Cell/lv2/sys_spu.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_spu.cpp
@@ -267,8 +267,13 @@ error_code sys_spu_thread_initialize(ppu_thread& ppu, vm::ptr<u32> thread, u32 g
 
 	sys_spu.warning("sys_spu_thread_initialize(thread=*0x%x, group=0x%x, spu_num=%d, img=*0x%x, attr=*0x%x, arg=*0x%x)", thread, group_id, spu_num, img, attr, arg);
 
+	if (attr->name_len > 0x80 || attr->option & ~(SYS_SPU_THREAD_OPTION_DEC_SYNC_TB_ENABLE | SYS_SPU_THREAD_OPTION_ASYNC_INTR_ENABLE))
+	{
+		return CELL_EINVAL;
+	}
+
 	// Read thread name
-	const std::string thread_name(attr->name.get_ptr(), attr->name ? attr->name_len - 1 : 0);
+	const std::string thread_name(attr->name.get_ptr(), std::max<u32>(attr->name_len, 1) - 1);
 
 	const auto group = idm::get<lv2_spu_group>(group_id);