diff --git a/conf/modules.config b/conf/modules.config
index 81ea168b..b2bba32d 100644
--- a/conf/modules.config
+++ b/conf/modules.config
@@ -1,4 +1,4 @@
-
+// additional process directives are in conf/production.config
 process {
 
     publishDir = [
@@ -8,7 +8,7 @@ process {
     ]
 
     cpus   = { check_max( 1    * task.attempt, 'cpus'   ) }
-    memory = { check_max( 7.GB * task.attempt, 'memory' ) }
+    memory = { check_max( 6.8.GB * task.attempt, 'memory' ) }
     time   = { check_max( 4.h  * task.attempt, 'time'   ) }
     errorStrategy = 'finish'