diff --git a/src/index.ts b/src/index.ts
index d50e3c77..35d697af 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -71,7 +71,7 @@ export function ms(
 export function parse(str: string): number {
   if (typeof str !== 'string' || str.length === 0 || str.length > 100) {
     throw new Error(
-      `Value provided to ms.parse() must be a string with length between 1 and 99. value=${JSON.stringify(str)}`,
+      `Value provided to ms.parse() must be a string with length between 1 and 100. value=${JSON.stringify(str)}`,
     );
   }
   const match =