diff --git a/libctru/source/os.c b/libctru/source/os.c
index 29ad36a..402ea99 100644
--- a/libctru/source/os.c
+++ b/libctru/source/os.c
@@ -163,12 +163,3 @@ void osSetSpeedupEnable(bool enable)
 	__ctru_speedup = enable;
 	__ctru_speedup_config();
 }
-
-int usleep(useconds_t useconds)
-{
-
-	svcSleepThread(useconds * 1000ull);
-
-	return 0;
-
-}
diff --git a/libctru/source/system/syscalls.c b/libctru/source/system/syscalls.c
index a0c2903..4d06f66 100644
--- a/libctru/source/system/syscalls.c
+++ b/libctru/source/system/syscalls.c
@@ -28,12 +28,20 @@ static struct _reent* __ctru_get_reent()
 	return tv->reent;
 }
 
+static int __libctru_nanosleep(const struct timespec *req, struct timespec *rem)
+{
+	svcSleepThread(req->tv_sec * 1000000000ull + req->tv_nsec);
+	return 0;
+}
+
+
 void __system_initSyscalls(void)
 {
 	// Register newlib syscalls
 	__syscalls.exit     = __ctru_exit;
 	__syscalls.gettod_r = __libctru_gtod;
 	__syscalls.getreent = __ctru_get_reent;
+	__syscalls.nanosleep = __libctru_nanosleep;
 
 	// Register locking syscalls
 	__syscalls.lock_init                  = LightLock_Init;