diff --git a/chart/values.yaml b/chart/values.yaml
index eb92f13adcfe9883b787bb3cad7ec3ce20fe7b09..f70af91d3c9dd17f628f887956c18a92b94e8951 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -82,7 +82,7 @@ backCronTasks:
       periodicity: "6 6 * * *"
 
 projects:
-  size: 20Gi
+  size: 19Gi
   minSizeToKeepFree: 10240 # size is in MB
   storageClassName: isilon