diff --git a/abrechenbarkeit.lua b/abrechenbarkeit.lua
index fb08f88..42015d8 100755
--- a/abrechenbarkeit.lua
+++ b/abrechenbarkeit.lua
@@ -719,7 +719,7 @@ local function r_products_post()
     end
     
     local name = data.name
-    if name == nil or name:match("^[%w_-]*$") == nil then
+    if name == nil or name:match("^" .. matchers.name .. "$") == nil then
         return error_box("{+error.invalid_name}")
     end