diff --git a/lib/core/public/run-rules.js b/lib/core/public/run-rules.js
index 7ae0b92b..8e04c13d 100644
--- a/lib/core/public/run-rules.js
+++ b/lib/core/public/run-rules.js
@@ -43,7 +43,7 @@ export default function runRules(context, options, resolve, reject) {
   }
 
   // If run for iframes is true then collect results from iframes
-  if (context.frames.length && options.iframes === true) {
+  if (context.frames.length && options.iframes !== false) {
     q.defer((res, rej) => {
       collectResultsFromFrames(context, options, 'rules', null, res, rej);
     });