diff --git a/tox.ini b/tox.ini
index b69972001ad..0bff7883189 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,6 +22,7 @@ setenv =
     unit: GALAXY_ENABLE_BETA_COMPRESSED_GENBANK_SNIFFING=1
     mulled: GALAXY_TEST_INCLUDE_SLOW=1
     check_indexes: GALAXY_TEST_FORCE_DATABASE_MIGRATION=1
+    check_indexes: GALAXY_SKIP_CLIENT_BUILD=1
 deps =
     lint,lint_docstring,lint_docstring_include_list: -rlib/galaxy/dependencies/pipfiles/flake8/pinned-requirements.txt
     unit: mock