diff --git a/rpcs3/Emu/Cell/MFC.cpp b/rpcs3/Emu/Cell/MFC.cpp
index 20ca75e149..57c1ca2611 100644
--- a/rpcs3/Emu/Cell/MFC.cpp
+++ b/rpcs3/Emu/Cell/MFC.cpp
@@ -142,6 +142,8 @@ void mfc_thread::cpu_task()
 					cmd.size = 0;
 					no_updates = 0;
 
+					vm::reservation_acquire(cmd.eal, 128);
+
 					// Store unconditionally
 					vm::writer_lock lock(0);
 					data = to_write;
diff --git a/rpcs3/Emu/Cell/SPUThread.cpp b/rpcs3/Emu/Cell/SPUThread.cpp
index 8bfcfe38f1..b80517291e 100644
--- a/rpcs3/Emu/Cell/SPUThread.cpp
+++ b/rpcs3/Emu/Cell/SPUThread.cpp
@@ -586,6 +586,8 @@ void SPUThread::process_mfc_cmd()
 		auto& data = vm::ps3::_ref<decltype(rdata)>(ch_mfc_cmd.eal);
 		const auto to_write = _ref<decltype(rdata)>(ch_mfc_cmd.lsa & 0x3ffff);
 
+		vm::reservation_acquire(ch_mfc_cmd.eal, 128);
+
 		// Store unconditionally
 		// TODO: vm::check_addr
 		vm::writer_lock lock(0);