diff --git a/rpcs3/Emu/SysCalls/Modules/sys_fs.cpp b/rpcs3/Emu/SysCalls/Modules/sys_fs.cpp
index 921d748d82..3b90d25b28 100644
--- a/rpcs3/Emu/SysCalls/Modules/sys_fs.cpp
+++ b/rpcs3/Emu/SysCalls/Modules/sys_fs.cpp
@@ -202,7 +202,11 @@ int cellFsAioRead(mem_ptr_t<CellFsAio> aio, mem32_t aio_id, mem_func_ptr_t<void
 
 	vfsFileBase* orig_file;
 	u32 fd = aio->fd;
-	if (!sys_fs->CheckId(fd, orig_file)) return CELL_EBADF;
+
+	if (!sys_fs->CheckId(fd, orig_file))
+	{
+		return CELL_EBADF;
+	}
 
 	//get a unique id for the callback (may be used by cellFsAioCancel)
 	const u32 xid = g_FsAioReadID++;
@@ -216,6 +220,15 @@ int cellFsAioRead(mem_ptr_t<CellFsAio> aio, mem32_t aio_id, mem_func_ptr_t<void
 	return CELL_OK;
 }
 
+int cellFsAioWrite(mem_ptr_t<CellFsAio> aio, mem32_t aio_id, mem_func_ptr_t<void(*)(mem_ptr_t<CellFsAio> xaio, int error, int xid, u64 size)> func)
+{
+	sys_fs->Todo("cellFsAioWrite(aio_addr=0x%x, id_addr=0x%x, func_addr=0x%x)", aio.GetAddr(), aio_id.GetAddr(), func.GetAddr());
+
+	// TODO:
+
+	return CELL_OK;
+}
+
 int cellFsAioInit(mem8_ptr_t mount_point)
 {
 	std::string mp = Memory.ReadString(mount_point.GetAddr());
@@ -265,6 +278,7 @@ void sys_fs_init()
 	sys_fs->AddFunc(0xef3efa34, cellFsFstat);
 	sys_fs->AddFunc(0xba901fe6, cellFsMkdir);
 	sys_fs->AddFunc(0xf12eecc8, cellFsRename);
+	sys_fs->AddFunc(0x99406d0b, cellFsChmod);
 	sys_fs->AddFunc(0x2796fdf3, cellFsRmdir);
 	sys_fs->AddFunc(0x7f4677a8, cellFsUnlink);
 	sys_fs->AddFunc(0xa397d042, cellFsLseek);
@@ -272,6 +286,7 @@ void sys_fs_init()
 	sys_fs->AddFunc(0xc9dc3ac5, cellFsTruncate);
 	sys_fs->AddFunc(0xcb588dba, cellFsFGetBlockSize);
 	sys_fs->AddFunc(0xc1c507e7, cellFsAioRead);
+	sys_fs->AddFunc(0x4cef342e, cellFsAioWrite);
 	sys_fs->AddFunc(0xdb869f20, cellFsAioInit);
 	sys_fs->AddFunc(0x9f951810, cellFsAioFinish);
 	sys_fs->AddFunc(0x1a108ab7, cellFsGetBlockSize);
diff --git a/rpcs3/Emu/SysCalls/lv2/lv2Fs.cpp b/rpcs3/Emu/SysCalls/lv2/lv2Fs.cpp
index eb881690d9..1ef720cac7 100644
--- a/rpcs3/Emu/SysCalls/lv2/lv2Fs.cpp
+++ b/rpcs3/Emu/SysCalls/lv2/lv2Fs.cpp
@@ -333,6 +333,15 @@ s32 cellFsRename(u32 from_addr, u32 to_addr)
 
 	return CELL_ENOENT;
 }
+s32 cellFsChmod(u32 path_addr, u32 mode)
+{
+	const std::string& ps3_path = Memory.ReadString(path_addr);
+	sys_fs->Todo("cellFsChmod(path=\"%s\", mode=0x%x)", ps3_path.c_str(), mode);
+
+	// TODO:
+
+	return CELL_OK;
+}
 
 s32 cellFsRmdir(u32 path_addr)
 {
diff --git a/rpcs3/Emu/SysCalls/lv2/lv2Fs.h b/rpcs3/Emu/SysCalls/lv2/lv2Fs.h
index c2a4faf33f..e23f0d4ba3 100644
--- a/rpcs3/Emu/SysCalls/lv2/lv2Fs.h
+++ b/rpcs3/Emu/SysCalls/lv2/lv2Fs.h
@@ -135,6 +135,7 @@ s32 cellFsStat(u32 path_addr, mem_ptr_t<CellFsStat> sb);
 s32 cellFsFstat(u32 fd, mem_ptr_t<CellFsStat> sb);
 s32 cellFsMkdir(u32 path_addr, u32 mode);
 s32 cellFsRename(u32 from_addr, u32 to_addr);
+s32 cellFsChmod(u32 path_addr, u32 mode);
 s32 cellFsRmdir(u32 path_addr);
 s32 cellFsUnlink(u32 path_addr);
 s32 cellFsLseek(u32 fd, s64 offset, u32 whence, mem64_t pos);