diff --git a/tests/call_tests.sh b/tests/call_tests.sh
index f672117..2ad3026 100755
--- a/tests/call_tests.sh
+++ b/tests/call_tests.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-cd ..
+cd $(dirname $0)/..
 PYTHONPATH=".:" tests/unit_tests.py --verbose
 
 #end