diff --git a/services/simcore/template.env b/services/simcore/template.env
index ebaca163..f9037fb4 100644
--- a/services/simcore/template.env
+++ b/services/simcore/template.env
@@ -109,9 +109,9 @@ RABBIT_SECURE=${RABBIT_SECURE}
 
 R_CLONE_PROVIDER=${R_CLONE_PROVIDER}
 R_CLONE_VFS_CACHE_MODE=${R_CLONE_VFS_CACHE_MODE}
-R_CLONE_OPTION_TRANSFERS={R_CLONE_OPTION_TRANSFERS}
-R_CLONE_OPTION_RETRIES={R_CLONE_OPTION_RETRIES}
-R_CLONE_OPTION_BUFFER_SIZE={R_CLONE_OPTION_BUFFER_SIZE}
+R_CLONE_OPTION_TRANSFERS=${R_CLONE_OPTION_TRANSFERS}
+R_CLONE_OPTION_RETRIES=${R_CLONE_OPTION_RETRIES}
+R_CLONE_OPTION_BUFFER_SIZE=${R_CLONE_OPTION_BUFFER_SIZE}
 
 REDIS_HOST=${REDIS_HOST}
 REDIS_PORT=${REDIS_PORT}