diff --git a/emission/integrationTests/docker-compose.yml b/emission/integrationTests/docker-compose.yml
index 3bee1fa26..e07056da7 100644
--- a/emission/integrationTests/docker-compose.yml
+++ b/emission/integrationTests/docker-compose.yml
@@ -45,7 +45,7 @@ services:
       - PBF_URL=https://download.geofabrik.de/north-america/us/rhode-island-latest.osm.pbf
       - REPLICATION_URL=https://download.geofabrik.de/north-america/us/rhode-island-updates/
       - IMPORT_WIKIPEDIA=false
-      - TEST_KEY=${TEST_KEY}
+      - TEST_KEY=$TEST_KEY
     ports:
       - "8080:8080"
       # healthcheck currently commented out, since it isn't necessary and keeps going the entire time the container is running.