diff --git a/rb/spec/tests.bzl b/rb/spec/tests.bzl
index 91b15dfa2631dc..f9a1b36bf3b03c 100644
--- a/rb/spec/tests.bzl
+++ b/rb/spec/tests.bzl
@@ -176,7 +176,7 @@ def rb_integration_test(name, srcs, deps = [], data = [], browsers = BROWSERS.ke
             env = BROWSERS[browser]["env"] | {"WD_SPEC_DRIVER": "remote"},
             main = "@bundle//bin:rspec",
             tags = COMMON_TAGS + BROWSERS[browser]["tags"] + tags + [
-                "{}-remote" % browser,
+                "{}-remote".format(browser),
                 "skip-remote",  # Do we want to run remote tests in RBE?
             ],
             deps = ["//rb/spec/integration/selenium/webdriver:spec_helper"] + BROWSERS[browser]["deps"] + deps,