diff --git a/tests/pthread_barrier/main.c b/tests/pthread_barrier/main.c
index 83c6e47d9c..b7b6881088 100644
--- a/tests/pthread_barrier/main.c
+++ b/tests/pthread_barrier/main.c
@@ -44,7 +44,7 @@ static void *run(void *id_)
         pthread_barrier_wait(&barrier);
 
         uint32_t timeout_us = random_uint32() % 2500000;
-        printf("Child %i sleeps for %8" PRIu32 " µs.\n", id, timeout_us);
+        printf("Child %i sleeps for %8" PRIu32 " us.\n", id, timeout_us);
         xtimer_usleep(timeout_us);
     }