diff --git a/stack.sh b/stack.sh
index 7272ec0a59..29e495378b 100755
--- a/stack.sh
+++ b/stack.sh
@@ -338,7 +338,7 @@ Q_ADMIN_USERNAME=${Q_ADMIN_USERNAME:-quantum}
 Q_AUTH_STRATEGY=${Q_AUTH_STRATEGY:-keystone}
 # Use namespace or not
 Q_USE_NAMESPACE=${Q_USE_NAMESPACE:-True}
-Q_USE_ROOTWRAP=${Q_USE_ROOTWRAP=:-True}
+Q_USE_ROOTWRAP=${Q_USE_ROOTWRAP:-True}
 # Meta data IP
 Q_META_DATA_IP=${Q_META_DATA_IP:-$HOST_IP}