diff --git a/include/hermit/syscall.h b/include/hermit/syscall.h
index 35b8a15e..c958e7c2 100644
--- a/include/hermit/syscall.h
+++ b/include/hermit/syscall.h
@@ -61,8 +61,7 @@ typedef struct _HermitItimerval HermitItimerval;
 struct _HermitRecursiveMutex;
 typedef struct _HermitRecursiveMutex HermitRecursiveMutex;
 
-struct _HermitSemaphore;
-typedef struct _HermitSemaphore HermitSemaphore;
+typedef void* HermitSemaphore;
 
 struct _HermitSpinlock;
 typedef struct _HermitSpinlock HermitSpinlock;
@@ -115,7 +114,7 @@ int sys_recmutex_init(HermitRecursiveMutex** recmutex);
 int sys_recmutex_destroy(HermitRecursiveMutex* recmutex);
 int sys_recmutex_lock(HermitRecursiveMutex* recmutex);
 int sys_recmutex_unlock(HermitRecursiveMutex* recmutex);
-int sys_sem_init(HermitSemaphore** sem, unsigned int pshared, unsigned int value);
+int sys_sem_init(HermitSemaphore* sem, unsigned int pshared, unsigned int value);
 int sys_sem_destroy(HermitSemaphore* sem);
 int sys_sem_post(HermitSemaphore* sem);
 int sys_sem_trywait(HermitSemaphore* sem);
diff --git a/librs b/librs
index fdca6aab..9468cb35 160000
--- a/librs
+++ b/librs
@@ -1 +1 @@
-Subproject commit fdca6aabc266264de03ffb4a3111d09750444a3c
+Subproject commit 9468cb35ae2152d92c9884d757301a5a48f69447