diff --git a/rpcs3/Emu/RSX/rsx_methods.cpp b/rpcs3/Emu/RSX/rsx_methods.cpp
index 991a045f1d..68ec9ec259 100644
--- a/rpcs3/Emu/RSX/rsx_methods.cpp
+++ b/rpcs3/Emu/RSX/rsx_methods.cpp
@@ -147,21 +147,33 @@ namespace rsx
 			const u32 addr = get_address(offset, ctxt, HERE);
 
 			atomic_t<u64>* res{};
+			bool upd = false;
 
 			// TODO: Check if possible to write on reservations
-			if (!g_use_rtm && rsx->label_addr >> 28 != addr >> 28) [[likely]]
+			if (rsx->label_addr >> 28 != addr >> 28)
 			{
-				res = &vm::reservation_lock(addr).first;
+				if (g_use_rtm)
+				{
+					upd = true;
+				}
+				else
+				{
+					res = &vm::reservation_lock(addr).first;
+				}
 			}
 
 			vm::_ref<RsxSemaphore>(addr).val = arg;
 
 			if (res)
 			{
-				res += 64;
+				res->fetch_add(64);
+				res->notify_all();
+			}
+			else if (upd)
+			{
+				// TODO: simply writing semaphore from RSX thread is wrong on TSX path
+				vm::reservation_update(addr);
 			}
-
-			vm::reservation_notifier(addr, 4).notify_all();
 		}
 	}