diff --git a/src/docker.js b/src/docker.js
index 4d7e03a9a..a9fce4849 100644
--- a/src/docker.js
+++ b/src/docker.js
@@ -245,7 +245,7 @@ async function getAddressesForPort53() {
 
     const addresses = [];
     for (const phy of physicalDevices) {
-        const [error, output] = await safe(shell.spawn('ip', ['-f', 'inet', '-j', 'addr', 'show', 'dev', phy.name, 'scope', 'global'], { encoding: 'utf8 '}));
+        const [error, output] = await safe(shell.spawn('ip', ['-f', 'inet', '-j', 'addr', 'show', 'dev', phy.name, 'scope', 'global'], { encoding: 'utf8' }));
         if (error) continue;
         const inet = safe.JSON.parse(output) || [];
         for (const r of inet) {