diff --git a/docker-entrypoint.d/06-enable-modules.sh b/docker-entrypoint.d/06-enable-modules.sh
index 0e90306..4b22866 100755
--- a/docker-entrypoint.d/06-enable-modules.sh
+++ b/docker-entrypoint.d/06-enable-modules.sh
@@ -1,3 +1,7 @@
 #!/bin/sh
 BASE_CONFIG_PATH=/etc/nginx/nginx.conf
-echo "load_module /etc/nginx/modules/ngx_http_dav_ext_module.so;\n$(cat $BASE_CONFIG_PATH)" > $BASE_CONFIG_PATH
+DAV_EXT_MODULE=ngx_http_dav_ext_module
+
+if [ ! "$(grep $DAV_EXT_MODULE $BASE_CONFIG_PATH)" ]; then
+    echo "load_module /etc/nginx/modules/${DAV_EXT_MODULE}.so;\n$(cat $BASE_CONFIG_PATH)" > $BASE_CONFIG_PATH
+fi