diff --git a/.prettierrc.json b/.prettierrc.json
index d750106..fab4002 100644
--- a/.prettierrc.json
+++ b/.prettierrc.json
@@ -1,5 +1,5 @@
 {
-  "printWidth": 100,
+  "printWidth": 80,
   "singleQuote": true,
   "tabWidth": 2
 }
diff --git a/src/printf.ts b/src/printf.ts
index 5f41c6d..7979e38 100644
--- a/src/printf.ts
+++ b/src/printf.ts
@@ -21,7 +21,9 @@ type ParseSpec<S extends string> = FirstChar<S> extends PrintfSpec
   ? [SpecTypeBySpecChar[FirstChar<S>], ...RecurArgs<TailOrEmpty<S>>]
   : never;
 
-type TailOrEmpty<S extends string> = S extends `${infer Head}${infer Tail}` ? Tail : '';
+type TailOrEmpty<S extends string> = S extends `${infer Head}${infer Tail}`
+  ? Tail
+  : '';
 
 type FirstChar<S extends string> = S extends ''
   ? never