diff --git a/scripts/unit-tests.sh b/scripts/unit-tests.sh
index add85ebb8d..02be8fdb06 100755
--- a/scripts/unit-tests.sh
+++ b/scripts/unit-tests.sh
@@ -51,7 +51,7 @@ else
 fi
 
 if [[ -n "$WHO_TESTS_WHAT" ]]; then
-    PAVER_ARGS="$PAVER_ARGS --with-wtw"
+    PAVER_ARGS="$PAVER_ARGS --with-wtw=origin/master"
 fi
 if [[ -n "$PYTEST_CONTEXTS" ]]; then
     PAVER_ARGS="$PAVER_ARGS --pytest-contexts"