diff --git a/conf/pipeline/sarek/sbc_sharc.config b/conf/pipeline/sarek/sbc_sharc.config
index 170b8bd..d970574 100644
--- a/conf/pipeline/sarek/sbc_sharc.config
+++ b/conf/pipeline/sarek/sbc_sharc.config
@@ -76,7 +76,7 @@ process {
 
     withName:'GATK4_MARKDUPLICATES' {
         cpus    = { check_max( 8 * task.attempt, 'cpus' ) }
-        memory  = { check_max( 30.GB * task.attempt, 'memory' ) }
+        memory  = { check_max( 16.GB * task.attempt, 'memory' ) }
         time    = { check_max( 8.h * task.attempt, 'time' ) }
     }