diff --git a/a8/xtimer.cc b/a8/xtimer.cc
index 1aedf90..3e01eec 100644
--- a/a8/xtimer.cc
+++ b/a8/xtimer.cc
@@ -251,7 +251,7 @@ namespace a8
         }
     }
 
-    a8::XParams& GetTimerXParams(xtimer_list* timer)
+    a8::XParams& XTimer::GetTimerXParams(xtimer_list* timer)
     {
         return timer->param;
     }