diff --git a/t/lib-patch-mode.sh b/t/lib-patch-mode.sh
old mode 100755
new mode 100644
index 75a3ee283d..ce36f34d03
--- a/t/lib-patch-mode.sh
+++ b/t/lib-patch-mode.sh
@@ -1,3 +1,5 @@
+: included from t2016 and others
+
 . ./test-lib.sh
 
 if ! test_have_prereq PERL; then
diff --git a/t/t6000lib.sh b/t/t6000lib.sh
old mode 100755
new mode 100644
index f55627b641..985d517a1c
--- a/t/t6000lib.sh
+++ b/t/t6000lib.sh
@@ -1,3 +1,5 @@
+: included from 6002 and others
+
 [ -d .git/refs/tags ] || mkdir -p .git/refs/tags
 
 :> sed.script