diff --git a/sh/core/code.sh b/sh/core/code.sh
index 9fa4bdf..937dbc3 100644
--- a/sh/core/code.sh
+++ b/sh/core/code.sh
@@ -307,7 +307,7 @@ $(cat "${rwx_main_root}/${module}")
 ${modules_main}
 EOF
 	# cache user modules
-	[ "${rwx_code_modules_user}" ] &&
+	[ -n "${rwx_code_modules_user}" ] &&
 		while IFS= read -r module; do
 			# cache user module
 			rwx_code_cache_user="${rwx_code_cache_user}\