Index: libcfa/src/concurrency/kernel.hfa
===================================================================
--- libcfa/src/concurrency/kernel.hfa	(revision c65565024f5efd9ceccdd9af925b2fd1f32e3ee5)
+++ libcfa/src/concurrency/kernel.hfa	(revision 0db48ca277851afe19811796bd58ac3e63be7448)
@@ -173,5 +173,5 @@
 
 static inline void  ?{}(__timestamp_t & this) { this.tv = 0; this.ma = 0; }
-static inline void ^?{}(__timestamp_t & this) {}
+static inline void ^?{}(__timestamp_t &) {}
 
 struct __attribute__((aligned(128))) __ready_queue_caches_t;