diff --git a/test/pummel/test-vm-memleak.js b/test/pummel/test-vm-memleak.js
index a433ab6565e147..568b37d8f6850f 100644
--- a/test/pummel/test-vm-memleak.js
+++ b/test/pummel/test-vm-memleak.js
@@ -34,7 +34,7 @@ const interval = setInterval(function() {
   } catch {
   }
 
-  const rss = process.memoryUsage().rss;
+  const rss = process.memoryUsage.rss();
   assert.ok(rss < 64 * 1024 * 1024,
             `memory usage: ${Math.round(rss / (1024 * 1024))}Mb`);