diff --git a/docker.js b/docker.js
index 079d1f812..390b852f4 100644
--- a/docker.js
+++ b/docker.js
@@ -1087,10 +1087,11 @@ export const getCredsFromHelper = (exeSuffix, serverAddress) => {
   if (isWin) {
     credHelperExe = credHelperExe + ".exe";
   }
-  const result = spawnSync(credHelperExe, ["get", serverAddress], {
+  const result = spawnSync(credHelperExe, ["get"], {
+    input: serverAddress,
     encoding: "utf-8"
   });
-  console.log("Invoking", credHelperExe, "get", serverAddress);
+  console.log("Invoking", credHelperExe, "get");
   if (result.status !== 0 || result.error) {
     console.log(result.stdout, result.stderr);
   } else if (result.stdout) {