diff --git a/docker/README.md b/docker/README.md
index 07590d0dd..37a2cc079 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -155,7 +155,7 @@ Corresponding `docker-compose.yml` overrides:
     environment:
       ELECTRUM_HOST: ""
       ELECTRUM_PORT: ""
-      ELECTRUM_TLS: ""
+      ELECTRUM_TLS_ENABLED: ""
       ...
 ```
 
diff --git a/docker/backend/start.sh b/docker/backend/start.sh
index 09672184d..960171e43 100644
--- a/docker/backend/start.sh
+++ b/docker/backend/start.sh
@@ -28,7 +28,7 @@ __CORE_RPC_PASSWORD__=${CORE_RPC_PASSWORD:=mempool}
 # ELECTRUM
 __ELECTRUM_HOST__=${ELECTRUM_HOST:=127.0.0.1}
 __ELECTRUM_PORT__=${ELECTRUM_PORT:=50002}
-__ELECTRUM_TLS_ENABLED__=${ELECTRUM_TLS:=false}
+__ELECTRUM_TLS_ENABLED__=${ELECTRUM_TLS_ENABLED:=false}
 
 # ESPLORA
 __ESPLORA_REST_API_URL__=${ESPLORA_REST_API_URL:=http://127.0.0.1:3000}