diff --git a/test/parallel/test-child-process-set-blocking.js b/test/parallel/test-child-process-set-blocking.js
index 51a079ef5fac73..b78b71e545b004 100644
--- a/test/parallel/test-child-process-set-blocking.js
+++ b/test/parallel/test-child-process-set-blocking.js
@@ -26,7 +26,7 @@ const ch = require('child_process');
 
 const SIZE = 100000;
 
-const cp = ch.spawn('python', ['-c', `print ${SIZE} * "C"`], {
+const cp = ch.spawn('python', ['-c', `print(${SIZE} * "C")`], {
   stdio: 'inherit'
 });