diff --git a/rfc-rustfmt.toml b/rfc-rustfmt.toml
index e286dcb4b7f..893996bc7ff 100644
--- a/rfc-rustfmt.toml
+++ b/rfc-rustfmt.toml
@@ -5,3 +5,4 @@ where_style = "Rfc"
 generics_indent = "Block"
 fn_call_style = "Block"
 combine_control_expr = true
+fn_args_paren_newline = false