diff --git a/img/Dockerfile b/img/Dockerfile
index 13e7946..2f94d0c 100644
--- a/img/Dockerfile
+++ b/img/Dockerfile
@@ -20,7 +20,7 @@ RUN adduser \
   --disabled-password \
   "${USER_NAME}"
 
-ENV HOME "${USER_HOME}"
+ENV HOME="${USER_HOME}"
 
 USER "${USER_NAME}"