diff --git a/lib/rule-tester/rule-tester.js b/lib/rule-tester/rule-tester.js
index 80bbef2a921..fe0e468916b 100644
--- a/lib/rule-tester/rule-tester.js
+++ b/lib/rule-tester/rule-tester.js
@@ -615,7 +615,7 @@ class RuleTester {
                     item.options.length > 0 &&
                     typeof rule === "object" &&
                     (
-                        !rule.meta || (rule.meta && typeof rule.meta.schema === "undefined")
+                        !rule.meta || (rule.meta && (typeof rule.meta.schema === "undefined" || rule.meta.schema === null))
                     )
                 ) {
                     emitMissingSchemaWarning(ruleName);