diff --git a/machines/derecho/config_batch.xml b/machines/derecho/config_batch.xml
index 7205b1a..cd87d47 100644
--- a/machines/derecho/config_batch.xml
+++ b/machines/derecho/config_batch.xml
@@ -5,7 +5,7 @@
   </submit_args>
   <directives gpu_enabled="false">
     <directive default="/bin/bash" > -S {{ shell }}  </directive>
-    <directive> -l select={{ num_nodes }}:ncpus={{ max_tasks_per_node }}:mpiprocs={{ tasks_per_node }}:ompthreads={{ thread_count }}:mem=230GB</directive>
+    <directive> -l select={{ num_nodes }}:ncpus={{ max_tasks_per_node }}:mpiprocs={{ tasks_per_node }}:ompthreads={{ thread_count }}</directive>
   </directives>
   <directives gpu_enabled="true">
     <directive default="/bin/bash" > -S {{ shell }} </directive>