diff --git a/sys/posix/semaphore/posix_semaphore.c b/sys/posix/semaphore/posix_semaphore.c
index d1152ef686..873b379ee6 100644
--- a/sys/posix/semaphore/posix_semaphore.c
+++ b/sys/posix/semaphore/posix_semaphore.c
@@ -22,7 +22,6 @@
 #include "irq.h"
 #include "sched.h"
 #include "sema.h"
-#include "tcb.h"
 #include "timex.h"
 #include "thread.h"
 #include "xtimer.h"