diff --git a/tools/autobuild.sh b/tools/autobuild.sh
index b4388be2eac..c529ac1d16d 100755
--- a/tools/autobuild.sh
+++ b/tools/autobuild.sh
@@ -6,4 +6,5 @@ exec "${CODEQL_DIST}/codeql" database index-files \
     --include-extension=.rb \
     --size-limit=5m \
     --language=ruby \
+    --working-dir=.\
     "$CODEQL_EXTRACTOR_RUBY_WIP_DATABASE"