diff --git a/filesize.d.ts b/filesize.d.ts
index 6f4c019..f282c7f 100644
--- a/filesize.d.ts
+++ b/filesize.d.ts
@@ -39,7 +39,7 @@ declare namespace Filesize {
 
     interface Options {
         /**
-         * Number base, default is 2
+         * Number base, default is 10
          */
         base?: number;
         /**
@@ -83,7 +83,7 @@ declare namespace Filesize {
          */
         spacer?: string;
         /**
-         * Standard unit of measure, can be iec or jedec, default is jedec; can be overruled by base
+         * Standard unit of measure, can be iec or jedec, default is iec; can be overruled by base
          */
         standard?: "iec" | "jedec";
         /**
@@ -104,4 +104,4 @@ declare namespace Filesize {
         (bytes: number, options?: Options): string;
         partial: (options: Options) => ((bytes: number) => string);
     }
-}
\ No newline at end of file
+}