diff --git a/.drone.yml b/.drone.yml
index a7fd497..80eae60 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -10,7 +10,7 @@ steps:
     terraform init \
       -chdir=terraform \
       -input=false \
-      -backend-config="conn_str=${PG_CONNECTIONSTRING}"
+      -backend-config="conn_str=$${PG_CONNECTIONSTRING}"
   environment:
     PG_CONNECTIONSTRING: postgres://${PG_USERNAME}:${PG_PASSWORD}@${PG_HOST}/${PG_DATABASE}?sslmode=disable
     PG_HOST: tfstate.default.svc.cluster.local