diff --git a/docker-compose/unb2-sim/Dockerfile b/docker-compose/unb2-sim/Dockerfile
index 4a6b1acfc2048c1368ec0355aab6822e82dd31aa..cbb4ce80185ee1cf0a84aabc457a7983e57b5651 100644
--- a/docker-compose/unb2-sim/Dockerfile
+++ b/docker-compose/unb2-sim/Dockerfile
@@ -2,8 +2,6 @@ FROM ubuntu:20.04
 
 COPY requirements.txt /requirements.txt
 
-ENV A = A
-
 RUN apt-get update && apt-get install -y python3 python3-pip python3-yaml git && \
     pip3 install -r requirements.txt && \
     git clone --depth 1 --branch master https://git.astron.nl/lofar2.0/pypcc