diff --git a/.github/ci-nightly-test.sh b/.github/ci-nightly-test.sh
index eea7af99a..cf0ddd4b1 100644
--- a/.github/ci-nightly-test.sh
+++ b/.github/ci-nightly-test.sh
@@ -17,6 +17,7 @@ version=$(cat $TMPDIR/eccodes/VERSION)
 regression_suite_dir=$TMPDIR/eccodes-regression-tests
 mkdir -p $regression_suite_dir
 git clone git@github.com:ecmwf/eccodes-regression-tests.git $regression_suite_dir
+cd $regression_suite_dir
 ./par-suite.sh -w $TMPDIR/install/eccodes/$version
 
 # For debugging specific test(s)