diff --git a/core/libs/prx/libkernel/Equeue/src/Kqueue.cpp b/core/libs/prx/libkernel/Equeue/src/Kqueue.cpp
index ae13538695..a1d0396298 100644
--- a/core/libs/prx/libkernel/Equeue/src/Kqueue.cpp
+++ b/core/libs/prx/libkernel/Equeue/src/Kqueue.cpp
@@ -98,9 +98,6 @@ std::optional<std::uint64_t> TimerPeriodNanos(std::int64_t data, std::uint32_t f
         unit = 1000ULL;
         break;
     case NOTE_NSECONDS:
-        if (data >= 1000000000LL && data % 1000000000LL != 0) {
-            NotImplemented_nid_no_patch("kevent: EVFILT_TIMER NOTE_NSECONDS period above one second with a fraction");
-        }
         unit = 1;
         break;
     default:
diff --git a/core/libs/tests/GuestKqueue.cpp b/core/libs/tests/GuestKqueue.cpp
index aecb4a9885..008d2f97a5 100644
--- a/core/libs/tests/GuestKqueue.cpp
+++ b/core/libs/tests/GuestKqueue.cpp
@@ -67,6 +67,7 @@ static constexpr std::uint32_t NoteTrigger = 0x01000000;
 static constexpr std::uint32_t NoteFfcopy = 0xc0000000;
 static constexpr std::uint32_t NoteFfor = 0x80000000;
 static constexpr std::uint32_t NoteUseconds = 0x0004;
+static constexpr std::uint32_t NoteNseconds = 0x0008;
 static constexpr std::uint32_t NoteDelete = 0x0001;
 static constexpr std::uint32_t NoteWrite = 0x0002;
 static constexpr std::uint32_t NoteExtend = 0x0004;
@@ -167,6 +168,12 @@ static void Timers() {
     Require(Poll(kq, events, 4) == 0);
     RequireFailure(Apply(kq, Change(2, EvfiltTimer, EvDelete)), GuestEnoent);
 
+    Require(Apply(kq, Change(5, EvfiltTimer, EvAdd | EvOneshot, NoteNseconds, 1500000001)) == 0);
+    const KernelTimespec twoSeconds{2, 0};
+    Require(kevent_nid_postfix(kq, nullptr, 0, events, 4, &twoSeconds) == 1);
+    Require(events[0].ident == 5 && events[0].data == 1);
+    Require(Poll(kq, events, 4) == 0);
+
     RequireFailure(Apply(kq, Change(3, EvfiltTimer, EvAdd, 0, -1)), GuestEinval);
     RequireFailure(Apply(kq, Change(3, EvfiltTimer, EvAdd, 0x10, 5)), GuestEinval);
     RequireFailure(Apply(kq, Change(3, EvfiltTimer, EvAdd, NoteUseconds | 0x1, 5)), GuestEinval);