diff --git a/tests/sizeof_tcb/main.c b/tests/sizeof_tcb/main.c
index 1d7db7b7f226003167ca91145a15683c054109dd..3ea2f4ea866feb928698c6cad119d424ea505b38 100644
--- a/tests/sizeof_tcb/main.c
+++ b/tests/sizeof_tcb/main.c
@@ -23,7 +23,7 @@
 
 #include "thread.h"
 
-#define P(NAME) printf("\t%-*s%4u%4u\n", 11, #NAME, \
+#define P(NAME) printf("\t%-11s%4u%4u\n", #NAME, \
                        (unsigned)sizeof(((thread_t *) 0)->NAME), \
                        (unsigned)offsetof(thread_t, NAME));