diff --git a/t/bidi.t b/t/bidi.t
index ebc0d88..72c803a 100755
--- a/t/bidi.t
+++ b/t/bidi.t
@@ -8,7 +8,7 @@
 
 test_description='Test bidirectionality of remote-hg'
 
-. ./test-lib.sh
+. "$(dirname "$0")"/test-lib.sh
 
 # clone to a git repo
 git_clone () {
diff --git a/t/hg-git.t b/t/hg-git.t
index 6d7e782..b097047 100755
--- a/t/hg-git.t
+++ b/t/hg-git.t
@@ -10,7 +10,7 @@
 
 test_description='Test remote-hg output compared to hg-git'
 
-. ./test-lib.sh
+. "$(dirname "$0")"/test-lib.sh
 
 export EXPECTED_DIR="$SHARNESS_TEST_DIRECTORY/expected"
 
diff --git a/t/main.t b/t/main.t
index 6da6a00..9c0fc86 100755
--- a/t/main.t
+++ b/t/main.t
@@ -8,7 +8,7 @@
 
 test_description='Test remote-hg'
 
-. ./test-lib.sh
+. "$(dirname "$0")"/test-lib.sh
 
 check () {
 	echo $3 > expected &&