diff --git a/tests/runtests.sh b/tests/runtests.sh
index 5774bfa..c99569b 100644
--- a/tests/runtests.sh
+++ b/tests/runtests.sh
@@ -1,6 +1,6 @@
 #/bin/bash
 
-REPO_TOP=$(git rev-parse --show-toplevel)
+REPO_TOP="$(dirname $0)/.."
 cd "${REPO_TOP}"
 
 echo "Basic environment"