diff --git a/gnu/tests/ganeti.scm b/gnu/tests/ganeti.scm
index 42ed58d977..140950776e 100644
--- a/gnu/tests/ganeti.scm
+++ b/gnu/tests/ganeti.scm
@@ -117,7 +117,7 @@
                        (gnu build marionette))
 
           (define marionette
-            (make-marionette (list #$vm)))
+            (make-marionette (list #$vm "-m" "1024")))
 
           (test-runner-current (system-test-runner #$output))
           (test-begin "ganeti")