diff --git a/sys/net/destiny/tcp_timer.c b/sys/net/destiny/tcp_timer.c
index 6be9f2b0f5..77bd60c0ce 100644
--- a/sys/net/destiny/tcp_timer.c
+++ b/sys/net/destiny/tcp_timer.c
@@ -31,6 +31,7 @@
 
 #include "tcp_timer.h"
 
+char tcp_timer_stack[TCP_TIMER_STACKSIZE];
 
 void handle_synchro_timeout(socket_internal_t *current_socket)
 {
diff --git a/sys/net/destiny/tcp_timer.h b/sys/net/destiny/tcp_timer.h
index 7c7b986695..2c0bdcdcf1 100644
--- a/sys/net/destiny/tcp_timer.h
+++ b/sys/net/destiny/tcp_timer.h
@@ -28,6 +28,4 @@
 
 void tcp_general_timer(void);
 
-char tcp_timer_stack[TCP_TIMER_STACKSIZE];
-
 #endif /* TCP_TIMER_H_ */