diff --git a/tests/run_tests.sh b/tests/run_tests.sh
index dd27845fe..ca6f938d8 100755
--- a/tests/run_tests.sh
+++ b/tests/run_tests.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+cd $(dirname $0)
 MICROPYTHON=../build/unix/micropython
 PYOPT=1