diff --git a/lib/internal/policy/sri.js b/lib/internal/policy/sri.js
index 6728ff4de22bd1..22704704a310bc 100644
--- a/lib/internal/policy/sri.js
+++ b/lib/internal/policy/sri.js
@@ -38,7 +38,7 @@ const parse = (str) => {
   let prevIndex = 0;
   let match;
   const entries = [];
-  while (match = RegExpPrototypeExec(kSRIPattern, str)) {
+  while ((match = RegExpPrototypeExec(kSRIPattern, str)) !== null) {
     if (match.index !== prevIndex) {
       throw new ERR_SRI_PARSE(str, str[prevIndex], prevIndex);
     }