diff --git a/lib/constants.py b/lib/constants.py
index 045209a73f025e9454d50f532b87caf1d5a34074..05bc01acd9da9acbb5db577227a341217f9154a2 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -436,3 +436,5 @@ BEC_DEFAULTS = {
     BE_VCPUS: 1,
     BE_AUTO_BALANCE: True,
     }
+
+MASTER_POOL_SIZE_DEFAULT = 10