diff --git a/tests/commit-tests.sh b/tests/commit-tests.sh
index 181d31d..b5af07e 100755
--- a/tests/commit-tests.sh
+++ b/tests/commit-tests.sh
@@ -4,7 +4,7 @@
 set -e
 
 # Start at top-level directory
-cd ..
+cd `dirname $0`/..
 
 # Build avr and run tests
 cd ports/avr