diff --git a/RTCP/Cobalt/GPUProc/src/scripts/cobalt_functions.sh b/RTCP/Cobalt/GPUProc/src/scripts/cobalt_functions.sh
index 8dd6353f0ab533d895051268f2412a91352e30c4..e59a910c4dd99dfe5a4969073206433e0184a072 100755
--- a/RTCP/Cobalt/GPUProc/src/scripts/cobalt_functions.sh
+++ b/RTCP/Cobalt/GPUProc/src/scripts/cobalt_functions.sh
@@ -65,7 +65,7 @@ function read_cluster_model {
       GLOBALFS=true
       DOCKER=false # disabled as outputproc is too slow on docker 1.9.1 (#9522)
 
-      CEP4=true
+      OUTPUTPROC_ROOT="`echo '/opt/outputproc-${LOFAR_TAG}' | docker-template`"
       ;;
     *)
       HEADNODE=lhn001.cep2.lofar
@@ -75,7 +75,7 @@ function read_cluster_model {
       GLOBALFS=false
       DOCKER=false
 
-      CEP4=false
+      OUTPUTPROC_ROOT="/data/home/lofarsys/production/lofar_cobalt"
       ;;
   esac
 
diff --git a/RTCP/Cobalt/GPUProc/src/scripts/runObservation.sh b/RTCP/Cobalt/GPUProc/src/scripts/runObservation.sh
index 92bb651a47230e13d23b79a01386c47822ccd12f..aadd9ffbac02f6b5c3ab48fbfd87868e19c1ad31 100755
--- a/RTCP/Cobalt/GPUProc/src/scripts/runObservation.sh
+++ b/RTCP/Cobalt/GPUProc/src/scripts/runObservation.sh
@@ -355,8 +355,7 @@ echo "[outputProc] pid file = $PID_LIST_FILE"
 touch $PID_LIST_FILE
 
 # Construct full command line for outputProc
-OUTPUTPROC_VARS="export QUEUE_PREFIX=$QUEUE_PREFIX LOFARENV=$LOFARENV;" # Variables to forward to outputProc
-OUTPUTPROC_CMDLINE="$OUTPUTPROC_VARS $OUTPUT_PROC_EXECUTABLE $OBSERVATIONID"
+OUTPUTPROC_CMDLINE="source $OUTPUTPROC_ROOT/lofarinit.sh; export QUEUE_PREFIX=$QUEUE_PREFIX LOFARENV=$LOFARENV; $OUTPUT_PROC_EXECUTABLE $OBSERVATIONID"
 
 # Wrap command line with Docker if required
 if $DOCKER; then
@@ -367,11 +366,6 @@ if $DOCKER; then
   OUTPUTPROC_CMDLINE="docker-run-slurm.sh --rm --cpu-shares=24576 --cap-add=sys_nice --cap-add=sys_admin -u `id -u $SSH_USER_NAME` --net=host -v $GLOBALFS_DIR:$GLOBALFS_DIR lofar-outputproc:$TAG bash -c \"sudo echo 950000 > /sys/fs/cgroup/cpu/cpu.rt_runtime_us; $OUTPUTPROC_CMDLINE\""
 fi
 
-if $CEP4; then
-  TAG="`echo '${LOFAR_TAG}' | docker-template`"
-  OUTPUTPROC_CMDLINE="source /opt/outputproc-$TAG/lofarinit.sh; $OUTPUTPROC_CMDLINE"
-fi
-
 echo "[outputProc] command line = $OUTPUTPROC_CMDLINE"
 
 if ! $DUMMY_RUN; then