diff --git a/rpcs3/Emu/Cell/PPUThread.cpp b/rpcs3/Emu/Cell/PPUThread.cpp
index 22c811fb36..4486b051cd 100644
--- a/rpcs3/Emu/Cell/PPUThread.cpp
+++ b/rpcs3/Emu/Cell/PPUThread.cpp
@@ -578,7 +578,7 @@ ppu_thread::~ppu_thread()
 ppu_thread::ppu_thread(const std::string& name, u32 prio, u32 stack)
 	: cpu_thread(idm::last_id())
 	, prio(prio)
-	, stack_size(std::max<u32>(stack, 0x4000))
+	, stack_size(stack ? ::align(std::min<u32>(stack, 0x100000), 0x1000) : 0x4000)
 	, stack_addr(0)
 	, start_time(get_system_time())
 	, m_name(name)