Index: src/libcfa/concurrency/monitor
===================================================================
--- src/libcfa/concurrency/monitor	(revision 751d963d84b423185793ddbd55a839b1643041d0)
+++ src/libcfa/concurrency/monitor	(revision 4cedd9fd7388881d56f46c8b5b5520dee1f9e9b2)
@@ -116,9 +116,9 @@
 }
 
-void wait( condition * this, uintptr_t user_info = 0 );
-bool signal( condition * this );
-bool signal_block( condition * this );
-static inline bool is_empty( condition * this ) { return !this->blocked.head; }
-uintptr_t front( condition * this );
+void wait( condition & this, uintptr_t user_info = 0 );
+bool signal( condition & this );
+bool signal_block( condition & this );
+static inline bool is_empty( condition & this ) { return !this.blocked.head; }
+uintptr_t front( condition & this );
 
 //-----------------------------------------------------------------------------