diff --git a/stack_orchestrator/data/compose/docker-compose-test.yml b/stack_orchestrator/data/compose/docker-compose-test.yml
index 6ebbd714..7c8e8e95 100644
--- a/stack_orchestrator/data/compose/docker-compose-test.yml
+++ b/stack_orchestrator/data/compose/docker-compose-test.yml
@@ -6,6 +6,7 @@ services:
       CERC_SCRIPT_DEBUG: ${CERC_SCRIPT_DEBUG}
       CERC_TEST_PARAM_1: ${CERC_TEST_PARAM_1:-FAILED}
       CERC_TEST_PARAM_2: "CERC_TEST_PARAM_2_VALUE"
+      CERC_TEST_PARAM_3: ${CERC_TEST_PARAM_3:-FAILED}
     volumes:
       - test-data-bind:/data
       - test-data-auto:/data2
diff --git a/stack_orchestrator/data/container-build/cerc-test-container/run.sh b/stack_orchestrator/data/container-build/cerc-test-container/run.sh
index 8a5a53a9..d06f4df4 100755
--- a/stack_orchestrator/data/container-build/cerc-test-container/run.sh
+++ b/stack_orchestrator/data/container-build/cerc-test-container/run.sh
@@ -39,6 +39,15 @@ fi
 if [ -n "$CERC_TEST_PARAM_2" ]; then
   echo "Test-param-2: ${CERC_TEST_PARAM_2}"
 fi
+if [ -n "$CERC_TEST_PARAM_3" ]; then
+  echo "Test-param-3: ${CERC_TEST_PARAM_3}"
+fi
+if [ -n "$CERC_TEST_PARAM_4" ]; then
+  echo "Test-param-4: ${CERC_TEST_PARAM_4}"
+fi
+if [ -n "$CERC_TEST_PARAM_5" ]; then
+  echo "Test-param-5: ${CERC_TEST_PARAM_5}"
+fi
 
 if [ -d "/config" ]; then
   echo "/config: EXISTS"
diff --git a/tests/deploy/run-deploy-test.sh b/tests/deploy/run-deploy-test.sh
index 9dec2d46..fb574b03 100755
--- a/tests/deploy/run-deploy-test.sh
+++ b/tests/deploy/run-deploy-test.sh
@@ -83,7 +83,7 @@ $TEST_TARGET_SO --stack test deploy down --delete-volumes
 # Basic test of creating a deployment
 test_deployment_dir=$CERC_REPO_BASE_DIR/test-deployment-dir
 test_deployment_spec=$CERC_REPO_BASE_DIR/test-deployment-spec.yml
-$TEST_TARGET_SO --stack test deploy init --output $test_deployment_spec --config CERC_TEST_PARAM_1=PASSED
+$TEST_TARGET_SO --stack test deploy init --output $test_deployment_spec --config CERC_TEST_PARAM_1=PASSED,CERC_TEST_PARAM_3=FAST
 # Check the file now exists
 if [ ! -f "$test_deployment_spec" ]; then
     echo "deploy init test: spec file not present"
@@ -141,6 +141,13 @@ else
     echo "deployment compose config test: FAILED"
     exit 1
 fi
+# Check the config variable CERC_TEST_PARAM_3 was passed correctly
+if [[ "$log_output_3" == *"Test-param-3: FAST"* ]]; then
+    echo "deployment config test: passed"
+else
+    echo "deployment config test: FAILED"
+    exit 1
+fi
 
 # Check that the ConfigMap is mounted and contains the expected content.
 log_output_4=$( $TEST_TARGET_SO deployment --dir $test_deployment_dir logs )