diff --git a/sys/vtimer/vtimer.c b/sys/vtimer/vtimer.c
index 9c6e6e3c92..8f3607d14b 100644
--- a/sys/vtimer/vtimer.c
+++ b/sys/vtimer/vtimer.c
@@ -29,7 +29,7 @@ static int set_longterm(vtimer_t *timer);
 static int set_shortterm(vtimer_t *timer);
 
 #ifdef ENABLE_DEBUG
-static void vtimer_print(vtimer_t *t);
+void vtimer_print(vtimer_t *t);
 #endif
 
 static queue_node_t longterm_queue_root;