diff --git a/docker-compose/Makefile b/docker-compose/Makefile
index 9af37b2276ff462a44918beaa3410745379f45bc..017f6ca8f05e03f58d57e5c527f783d2673ac0b1 100644
--- a/docker-compose/Makefile
+++ b/docker-compose/Makefile
@@ -18,7 +18,7 @@ ifndef NETWORK_MODE
 $(error NETWORK_MODE must specify the network to attach to, e.g., make NETWORK_MODE=tangonet-powersupply ...)
 endif
 ifndef TANGO_HOST
-$(error TANGO_HOST must specify the Tango database device, e.g., make TANGO_HOST=powersupply-databaseds:100000 ...)
+$(error TANGO_HOST must specify the Tango database device, e.g., make TANGO_HOST=powersupply-databaseds:10000 ...)
 endif
 endif
 ifdef SERVICE_TARGET