diff --git a/src/types/index.d.ts b/src/types/index.d.ts
index 4c11022..655d062 100644
--- a/src/types/index.d.ts
+++ b/src/types/index.d.ts
@@ -17,15 +17,9 @@ declare module 'ruuvitag-parser' {
   export namespace formats_2_and_4 {
     function parse(data: Buffer): ParsedFormatV2 | ParsedFormatV4
   }
-  export namespace format_2 {
-    function parse(data: Buffer): ParsedFormatV2
-  }
   export namespace format_3 {
     function parse(data: string | Buffer): ParsedFormatV3
   }
-  export namespace format_4 {
-    function parse(data: Buffer): ParsedFormatV4
-  }
   export namespace format_5 {
     function parse(data: string | Buffer): ParsedFormatV5
   }