diff --git a/contrib/remote-helpers/test-hg-bidi.sh b/contrib/remote-helpers/test-hg-bidi.sh
index e24c51daad..d86e147d3d 100755
--- a/contrib/remote-helpers/test-hg-bidi.sh
+++ b/contrib/remote-helpers/test-hg-bidi.sh
@@ -8,7 +8,8 @@
 
 test_description='Test bidirectionality of remote-hg'
 
-. ./test-lib.sh
+test -n "$TEST_DIRECTORY" || TEST_DIRECTORY=${0%/*}/../../t
+. "$TEST_DIRECTORY"/test-lib.sh
 
 if ! test_have_prereq PYTHON
 then
diff --git a/contrib/remote-helpers/test-hg-hg-git.sh b/contrib/remote-helpers/test-hg-hg-git.sh
index 6dcd95d10f..b23909ae6c 100755
--- a/contrib/remote-helpers/test-hg-hg-git.sh
+++ b/contrib/remote-helpers/test-hg-hg-git.sh
@@ -8,7 +8,8 @@
 
 test_description='Test remote-hg output compared to hg-git'
 
-. ./test-lib.sh
+test -n "$TEST_DIRECTORY" || TEST_DIRECTORY=${0%/*}/../../t
+. "$TEST_DIRECTORY"/test-lib.sh
 
 if ! test_have_prereq PYTHON
 then