diff --git a/docker/rabbitmq/Dockerfile.j2 b/docker/rabbitmq/Dockerfile.j2
index de30d1d..970335f 100644
--- a/docker/rabbitmq/Dockerfile.j2
+++ b/docker/rabbitmq/Dockerfile.j2
@@ -1,4 +1,4 @@
-FROM {{ namespace }}/base-tools:{{ tag }}
+FROM {{ image_spec("base-tools") }}
 MAINTAINER {{ maintainer }}
 
 RUN apt-get install -y --no-install-recommends \