diff --git a/example/mem-limit/mem.jdg b/example/mem-limit/mem.jdg
index 11ac580..ab2b950 100644
--- a/example/mem-limit/mem.jdg
+++ b/example/mem-limit/mem.jdg
@@ -19,7 +19,7 @@ group("within_limit") {
     memory_limit = 256M
 
     test("allocate_16mb") {
-        args   = ["16"]
+        args   = "16"
         stdout = "ok 16\n"
     }
 }
@@ -29,7 +29,7 @@ group("exceeds_limit") {
     memory_limit = 64M
 
     test("allocate_256mb") {
-        args = ["256"]
+        args = "256"
         // no stdout matcher: process is expected to be killed before it prints
     }
 }