diff --git a/lua/conform/formatters/csharpier.lua b/lua/conform/formatters/csharpier.lua
index d7ffd632..be7433c5 100644
--- a/lua/conform/formatters/csharpier.lua
+++ b/lua/conform/formatters/csharpier.lua
@@ -30,7 +30,7 @@ return {
   end,
   args = function()
     if is_local() then
-      return { "csharpier", "format" }
+      return { "csharpier", "format", "--stdin-path", "$FILENAME" }
     else
       return { "format" }
     end