diff --git a/tests/sizeof_tcb/Makefile b/tests/sizeof_tcb/Makefile
index 51be18edcc..065d22bf05 100644
--- a/tests/sizeof_tcb/Makefile
+++ b/tests/sizeof_tcb/Makefile
@@ -5,7 +5,7 @@ include ../Makefile.tests_common
 # disabled by default:
 # USEMODULE += core_thread_flags
 #
-# enabled by defaule:
+# enabled by default:
 # DISABLE_MODULE += core_msg
 
 TEST_ON_CI_WHITELIST += all