diff --git a/src/XrdSys/XrdSysPthread.hh b/src/XrdSys/XrdSysPthread.hh
index 5132530..22a81d6 100644
--- a/src/XrdSys/XrdSysPthread.hh
+++ b/src/XrdSys/XrdSysPthread.hh
@@ -119,9 +119,9 @@ inline void UnLock() {if (cnd) {cnd->UnLock(); cnd = 0;}}
                  {if (CndVar) CndVar->Lock();
                   cnd = CndVar;
                  }
-            XrdSysCondVarHelper(XrdSysCondVar &CndVar) {
-	         CndVar.Lock();
-		 cnd = &CndVar;
+            XrdSysCondVarHelper(XrdSysCondVar &CndVar)
+                 {CndVar.Lock();
+                  cnd = &CndVar;
                  }
 
            ~XrdSysCondVarHelper() {if (cnd) UnLock();}
@@ -204,9 +204,9 @@ inline void UnLock() {if (mtx) {mtx->UnLock(); mtx = 0;}}
                  {if (mutex) mutex->Lock();
                   mtx = mutex;
                  }
-            XrdSysMutexHelper(XrdSysMutex &mutex) {
-	         mutex.Lock();
-		 mtx = &mutex;
+            XrdSysMutexHelper(XrdSysMutex &mutex)
+                 {mutex.Lock();
+                  mtx = &mutex;
                  }
 
            ~XrdSysMutexHelper() {if (mtx) UnLock();}
@@ -350,11 +350,11 @@ inline void Wait() {while (sem_wait(&h_semaphore))
 
   XrdSysSemaphore(int semval=1, const char * =0)
                                {if (sem_init(&h_semaphore, 0, semval))
-				   {throw "sem_init() failed";}
+                                   {throw "sem_init() failed";}
                                }
  ~XrdSysSemaphore() {if (sem_destroy(&h_semaphore))
-                       {throw "sem_destroy() failed";}
-                   }
+                        {abort();}
+                    }
 
 private:
 
diff --git a/src/XrdSys/XrdSysXSLock.cc b/src/XrdSys/XrdSysXSLock.cc
index 3a4df53..e8d0bc0 100644
--- a/src/XrdSys/XrdSysXSLock.cc
+++ b/src/XrdSys/XrdSysXSLock.cc
@@ -43,7 +43,7 @@ XrdSysXSLock::~XrdSysXSLock()
    LockContext.Lock();
    if (cur_count || shr_wait || exc_wait)
       {LockContext.UnLock();
-       throw "XSLock_delete: Lock object is still active.";
+       abort();
       }
    LockContext.UnLock();
 }