diff --git a/rpcs3/Emu/Cell/lv2/sys_event_flag.cpp b/rpcs3/Emu/Cell/lv2/sys_event_flag.cpp
index 68c6ffdf88..008845e5c0 100644
--- a/rpcs3/Emu/Cell/lv2/sys_event_flag.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_event_flag.cpp
@@ -10,16 +10,16 @@
 
 #include <algorithm>
 
-
-
 LOG_CHANNEL(sys_event_flag);
 
 template<> DECLARE(ipc_manager<lv2_event_flag, u64>::g_ipc) {};
 
 extern u64 get_system_time();
 
-error_code sys_event_flag_create(vm::ptr<u32> id, vm::ptr<sys_event_flag_attribute_t> attr, u64 init)
+error_code sys_event_flag_create(ppu_thread& ppu, vm::ptr<u32> id, vm::ptr<sys_event_flag_attribute_t> attr, u64 init)
 {
+	vm::temporary_unlock(ppu);
+
 	sys_event_flag.warning("sys_event_flag_create(id=*0x%x, attr=*0x%x, init=0x%llx)", id, attr, init);
 
 	if (!id || !attr)
@@ -62,8 +62,10 @@ error_code sys_event_flag_create(vm::ptr<u32> id, vm::ptr<sys_event_flag_attribu
 	return CELL_OK;
 }
 
-error_code sys_event_flag_destroy(u32 id)
+error_code sys_event_flag_destroy(ppu_thread& ppu, u32 id)
 {
+	vm::temporary_unlock(ppu);
+
 	sys_event_flag.warning("sys_event_flag_destroy(id=0x%x)", id);
 
 	const auto flag = idm::withdraw<lv2_obj, lv2_event_flag>(id, [&](lv2_event_flag& flag) -> CellError
@@ -91,6 +93,8 @@ error_code sys_event_flag_destroy(u32 id)
 
 error_code sys_event_flag_wait(ppu_thread& ppu, u32 id, u64 bitptn, u32 mode, vm::ptr<u64> result, u64 timeout)
 {
+	vm::temporary_unlock(ppu);
+
 	sys_event_flag.trace("sys_event_flag_wait(id=0x%x, bitptn=0x%llx, mode=0x%x, result=*0x%x, timeout=0x%llx)", id, bitptn, mode, result, timeout);
 
 	// Fix function arguments for external access
@@ -202,8 +206,10 @@ error_code sys_event_flag_wait(ppu_thread& ppu, u32 id, u64 bitptn, u32 mode, vm
 	return not_an_error(ppu.gpr[3]);
 }
 
-error_code sys_event_flag_trywait(u32 id, u64 bitptn, u32 mode, vm::ptr<u64> result)
+error_code sys_event_flag_trywait(ppu_thread& ppu, u32 id, u64 bitptn, u32 mode, vm::ptr<u64> result)
 {
+	vm::temporary_unlock(ppu);
+
 	sys_event_flag.trace("sys_event_flag_trywait(id=0x%x, bitptn=0x%llx, mode=0x%x, result=*0x%x)", id, bitptn, mode, result);
 
 	if (result) *result = 0;
@@ -240,6 +246,8 @@ error_code sys_event_flag_trywait(u32 id, u64 bitptn, u32 mode, vm::ptr<u64> res
 
 error_code sys_event_flag_set(u32 id, u64 bitptn)
 {
+	vm::temporary_unlock();
+
 	// Warning: may be called from SPU thread.
 	sys_event_flag.trace("sys_event_flag_set(id=0x%x, bitptn=0x%llx)", id, bitptn);
 
@@ -321,8 +329,10 @@ error_code sys_event_flag_set(u32 id, u64 bitptn)
 	return CELL_OK;
 }
 
-error_code sys_event_flag_clear(u32 id, u64 bitptn)
+error_code sys_event_flag_clear(ppu_thread& ppu, u32 id, u64 bitptn)
 {
+	vm::temporary_unlock(ppu);
+
 	sys_event_flag.trace("sys_event_flag_clear(id=0x%x, bitptn=0x%llx)", id, bitptn);
 
 	const auto flag = idm::check<lv2_obj, lv2_event_flag>(id, [&](lv2_event_flag& flag)
@@ -340,6 +350,8 @@ error_code sys_event_flag_clear(u32 id, u64 bitptn)
 
 error_code sys_event_flag_cancel(ppu_thread& ppu, u32 id, vm::ptr<u32> num)
 {
+	vm::temporary_unlock(ppu);
+
 	sys_event_flag.trace("sys_event_flag_cancel(id=0x%x, num=*0x%x)", id, num);
 
 	if (num) *num = 0;
@@ -383,8 +395,10 @@ error_code sys_event_flag_cancel(ppu_thread& ppu, u32 id, vm::ptr<u32> num)
 	return CELL_OK;
 }
 
-error_code sys_event_flag_get(u32 id, vm::ptr<u64> flags)
+error_code sys_event_flag_get(ppu_thread& ppu, u32 id, vm::ptr<u64> flags)
 {
+	vm::temporary_unlock(ppu);
+
 	sys_event_flag.trace("sys_event_flag_get(id=0x%x, flags=*0x%x)", id, flags);
 
 	if (!flags)
diff --git a/rpcs3/Emu/Cell/lv2/sys_event_flag.h b/rpcs3/Emu/Cell/lv2/sys_event_flag.h
index 4bca382522..e36d244c15 100644
--- a/rpcs3/Emu/Cell/lv2/sys_event_flag.h
+++ b/rpcs3/Emu/Cell/lv2/sys_event_flag.h
@@ -114,11 +114,11 @@ class ppu_thread;
 
 // Syscalls
 
-error_code sys_event_flag_create(vm::ptr<u32> id, vm::ptr<sys_event_flag_attribute_t> attr, u64 init);
-error_code sys_event_flag_destroy(u32 id);
+error_code sys_event_flag_create(ppu_thread& ppu, vm::ptr<u32> id, vm::ptr<sys_event_flag_attribute_t> attr, u64 init);
+error_code sys_event_flag_destroy(ppu_thread& ppu, u32 id);
 error_code sys_event_flag_wait(ppu_thread& ppu, u32 id, u64 bitptn, u32 mode, vm::ptr<u64> result, u64 timeout);
-error_code sys_event_flag_trywait(u32 id, u64 bitptn, u32 mode, vm::ptr<u64> result);
+error_code sys_event_flag_trywait(ppu_thread& ppu, u32 id, u64 bitptn, u32 mode, vm::ptr<u64> result);
 error_code sys_event_flag_set(u32 id, u64 bitptn);
-error_code sys_event_flag_clear(u32 id, u64 bitptn);
+error_code sys_event_flag_clear(ppu_thread& ppu, u32 id, u64 bitptn);
 error_code sys_event_flag_cancel(ppu_thread& ppu, u32 id, vm::ptr<u32> num);
-error_code sys_event_flag_get(u32 id, vm::ptr<u64> flags);
+error_code sys_event_flag_get(ppu_thread& ppu, u32 id, vm::ptr<u64> flags);