diff --git a/packages/pds/src/pipethrough.ts b/packages/pds/src/pipethrough.ts
index 595584b9388..a33e719eda8 100644
--- a/packages/pds/src/pipethrough.ts
+++ b/packages/pds/src/pipethrough.ts
@@ -154,7 +154,7 @@ export const doProxy = async (url: URL, reqInit: RequestInit) => {
 const isSafeUrl = (url: URL) => {
   if (url.protocol !== 'https:') return false
   if (!url.hostname || url.hostname === 'localhost') return false
-  if (net.isIP(url.hostname) === 0) return false
+  if (net.isIP(url.hostname) !== 0) return false
   return true
 }