diff --git a/conf/vsc_ugent.config b/conf/vsc_ugent.config
index 169faab..9837a54 100644
--- a/conf/vsc_ugent.config
+++ b/conf/vsc_ugent.config
@@ -10,6 +10,7 @@ workDir = "$scratch_dir/work"
 // Reduce the job submit rate to about 5 per second, this way the server won't be bombarded with jobs
 executor {
     submitRateLimit = '5 sec'
+    queueSize = 50
 }
 
 // Specify that singularity should be used and where the cache dir will be for the images