diff --git a/SAS/TMSS/docker/tmss-testenv/tmss_testenv_Dockerfile b/SAS/TMSS/docker/tmss-testenv/tmss_testenv_Dockerfile
index 43fb3c6b42a3bc27f9f9777b0417320dd0caea8d..9df0c266349de01397167786a72dbc6515b15d1c 100644
--- a/SAS/TMSS/docker/tmss-testenv/tmss_testenv_Dockerfile
+++ b/SAS/TMSS/docker/tmss-testenv/tmss_testenv_Dockerfile
@@ -21,7 +21,7 @@ ENV PATH=$PATH:/usr/pgsql-9.4/bin/
 RUN echo "Checking out code base" && \
     git clone https://git.astron.nl/ro/lofar.git && \
     cd lofar && \
-    git checkout master && \
+    git checkout TMSS-138 && \
     . CMake/gen_LofarPackageList_cmake.sh && \
     PACKAGE=TMSS  && \
     VARIANT=gnucxx11_opt  && \